Browse All : Geology of Colorado

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Wheeler, G.M.
69B, D, 77B, 78A. Parts of A …
1881
National Atlas
Authors Wheeler, G.M.
Full Title Parts of Atlas Sheets Nos. 69(B), 69(D), 77(B) and 78(A). (with) Parts of North Central New Mexico ... Southern Colorado and Northern New Mexico. Issued June 30, 1881. Expeditions of 1873, 1878 and 1879 Under the Command of 1st. Lieut. Geo. M. Wheeler, Corps of Engineers, U.S. Army. Prof. John J. Stevenson, Geological Assistant. U.S. Geographical Surveys West Of The 100th Meridian.
Note Four separate maps with hachures showing geologic formations in full color. Legend included.
Wheeler, G.M.
70A. Parts Of Southern Color …
1881
National Atlas
Authors Wheeler, G.M.
Full Title Parts Of Southern Colorado And Northern New Mexico, Atlas Sheet No. 70 (A.). Issued May 7th 1877. 2nd Ed. June 30th 1881. Weyss, Herman & Mahlo Del. Expeditions of 1878 & 1879 Under the Command of 1st. Lieut. Geo. M. Wheeler, Corps of Engineers, U.S. Army. Prof. John J. Stevenson, Geological Assistant. U.S. Geographical Surveys West Of The 100th Meridian.
Note Base map P1281-128 with overlay of geologic formations in full color. Legend along bottom of map sheet.
Hayden, F.V.
Cover: Geological, geographi …
1881
State Atlas
Authors Hayden, F.V.
Full Title (Covers to) Department Of The Interior. United States Geological And Geographical Surveys Of The Territories. Geological And Geographical Atlas Of Colorado And Portions Of Adjacent Territory By F.V. Hayden, U.S. Geologist In Charge. Corrected To Date And Printed In Accordance With An Act Of Congress Approved February 9th 1881. Julius Bien, Lith.
Hayden, F.V.
Title Page: Geological and g …
1881
State Atlas
Authors Hayden, F.V.
Full Title (Title Page to) Department Of The Interior. United States Geological And Geographical Surveys Of The Territories. Geological And Geographical Atlas Of Colorado And Portions Of Adjacent Territory By F.V. Hayden, U.S. Geologist In Charge. Corrected To Date And Printed In Accordance With An Act Of Congress Approved February 9th 1881. Julius Bien, Lith.
Note The second edition, folowing the first edition of 1877. Julius Bien was the lithographer. The maps are very detailed and present the best mapping of Colorado at the time. The maps have been updated to show completed and projected railroads. However, there are no changes to the topography from the first edition. Geology maps in full printed color. Atlas is bound into brown cloth covers stamped with the title "Geological And Geographical Atlas Of Colorado And Portions Of Adjacent Territory. Hayden." in gold.
Hayden, F.V.
Index: Geological, geographi …
1881
State Atlas
Authors Hayden, F.V.
Full Title (Index Page to) Department Of The Interior. United States Geological And Geographical Surveys Of The Territories. Geological And Geographical Atlas Of Colorado And Portions Of Adjacent Territory By F.V. Hayden, U.S. Geologist In Charge. Corrected To Date And Printed In Accordance With An Act Of Congress Approved February 9th 1881. Julius Bien, Lith.
Note Sheets noted. Legend is included giving contour intervals, scale of the maps, and attribution for the completed work.
Spurr, Josiah Edward
Covers: Atlas to the Geology …
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title (Covers to) Department Of The Interior, United States Geological Survey, Charles D. Walcott, Director. Atlas To Accompany Monograph XXXI On The Geology Of The Aspen District Colorado By Josiah Edward Spurr, Samuel Franklin Emmons, Geologist In Charge. Washington 1898. Julius Bien & Co. Lith. N.Y.
Note Bound in original dark brown cloth covered boards with "United States Geological Survey, Charles D. Walcott, Director. Atlas To Accompany Monograph XXXI On The Geology Of The Aspen District Colorado. Josiah Edward Spurr" stamped in gilt.
Hayden, F.V.
Triangulation Map of Colorad …
1881
State Atlas
Authors Hayden, F.V.
Full Title Triangulation Map of Colorado. By J.T. Gardner and A.D. Wilson. Department of the Interior, U.S. Geological and Geographical Survey of the Territories, F.V. Hayden, U.S. Geologist in Charge. Sheet I.
Note Map without color. Map shows lines radiating from the many spots used for triangulation measurements. Railroad lines are also shown.
Spurr, Josiah Edward
Title Page: Atlas to the Geo …
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title (Title Page to) Department Of The Interior, United States Geological Survey, Charles D. Walcott, Director. Atlas To Accompany Monograph XXXI On The Geology Of The Aspen District Colorado By Josiah Edward Spurr, Samuel Franklin Emmons, Geologist In Charge. Washington 1898. Julius Bien & Co. Lith. N.Y.
Spurr, Josiah Edward
Table of Contents: Atlas to …
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title (Table of Contents to) Department Of The Interior, United States Geological Survey, Charles D. Walcott, Director. Atlas To Accompany Monograph XXXI On The Geology Of The Aspen District Colorado By Josiah Edward Spurr, Samuel Franklin Emmons, Geologist In Charge. Washington 1898. Julius Bien & Co. Lith. N.Y.
Spurr, Josiah Edward
Legend: Atlas to the Geology …
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title (Legend to) Department Of The Interior, United States Geological Survey, Charles D. Walcott, Director. Atlas To Accompany Monograph XXXI On The Geology Of The Aspen District Colorado By Josiah Edward Spurr, Samuel Franklin Emmons, Geologist In Charge. Washington 1898. Julius Bien & Co. Lith. N.Y.
Note Provides a description of the atlas and geology of the Aspen Mining District, Colorado.
Spurr, Josiah Edward
Aspen District Sheet.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Aspen District Sheet. Geology Sheet VI . U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. A.H. Thompson, Geographer. Morris Bien, Topographer in charge. Triangulation by Morris Bien. Topography by F.F. Grove. Surveyed in 1891. S.F. Emmons, Geologist in charge. Geology by J.E. Spurr. Assistant, G.W. Tower. Julius Bien & Co. Lith. N.Y. (1898)
Note Topography shown by 100-foot contours. Shows streams, mines, roads, trails, and settlements. Geology shown in 16 colored classes, and faults. Shows alignment of cross-sections presented on the subsequent sheet.
Spurr, Josiah Edward
Sheet VII Sections.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Sheet VII Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geology shown in 16 colored classes, and faults.
Spurr, Josiah Edward
Aspen Special.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Aspen Special Sheet. Geology Sheet IX. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. A.H. Thompson, Geographer. Morris Bien, Topographer in charge. Triangulation by Morris Bien. Topography by F.F. Grove. Surveyed in 1891. S.F. Emmons, Geologist in charge. Geology by J.E. Spurr. Assistant, G.W. Tower. Julius Bien & Co. Lith. N.Y. (1898)
Note Geology shown in color in 11 classes, and faults. Cross section alignments provided in next sheet shown here.
Spurr, Josiah Edward
Aspen Special Sheet.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Aspen Special Sheet. Sheet X Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geologic cross-sections shown in color in 11 classes, and faults.
Spurr, Josiah Edward
Tourtelotte Park Special.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Tourtelotte Park Special. Geology Sheet XII. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. A.H. Thompson, Geographer. Morris Bien, Topographer in charge. Triangulation by Morris Bien. Topography by F.F. Grove. Surveyed in 1891. S.F. Emmons, Geologist in charge. Geology by J.E. Spurr. Assistant, G.W. Tower. Julius Bien & Co. Lith. N.Y. (1898)
Note Geology shown in color with 10 classes of rock, and faults. Shows alignment of cross-sections on following sheets.
Spurr, Josiah Edward
Tourtelotte Park Special She …
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Tourtelotte Park Special Sheet. Sheet XIII Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geologic cross-sections shown in color in 9 classes, and faults.
Spurr, Josiah Edward
Tourtelotte Park Special She …
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Tourtelotte Park Special Sheet. Sheet XIV Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geologic cross-sections shown in color in 9 classes, and faults.
Spurr, Josiah Edward
Tourtelotte Park Special She …
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Tourtelotte Park Special Sheet. Sheet XV Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geologic cross-sections shown in color in 9 classes, and faults.
Spurr, Josiah Edward
Hunter Park Special Sheet.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Hunter Park Special Sheet. Geology Sheet XVII . U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. A.H. Thompson, Geographer. F.M Douglas, Topographer in charge. Triangulation by E.M. Douglas. Topography by (R.C. McKinney). S.F. Emmons, Geologist in Charge. Geology by J.E. Spurr. Assistant, G.W. Tower. Surveyed in 1893. Julius Bien & Co. Lith. N.Y. (1898)
Note Geology shown in color in 8 classes of rock, and faults. Alignment of cross-sections on next sheet shown.
Spurr, Josiah Edward
Hunter Park Special Sheet.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Hunter Park Special Sheet. Sheet XVIII Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geologic cross-sections shown in color in 8 classes, and faults.
Spurr, Josiah Edward
Lenado Special Sheet.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Lenado Special Sheet. Geology Sheet XX . U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. A.H. Thompson, Geographer. F.M Douglas, Topographer in charge. Triangulation by E.M. Douglas. Topography by W.B. Gorse and R.H. Chapman. Surveyed in 1893. S.F. Emmons, Geologist in Charge. Geology by J.E. Spurr. Assistant, G.W. Tower. Julius Bien & Co. Lith. N.Y. (1898)
Note Geology shown in color in 8 classes of rock, and faults. Map and cross sections on one sheet.
Spurr, Josiah Edward
Tourtelotte Park Mining Dist …
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Tourtelotte Park Mining District Sheet. Geology Sheet XXI. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. A.H. Thompson, Geographer. Morris Bien, Topographer in charge. Triangulation by Morris Bien. Topography by F.F. Grove. Surveyed in 1891. S.F. Emmons, Geologist in charge. Geology by J.E. Spurr. Assistant, G.W. Tower. Julius Bien & Co. Lith. N.Y. (1898)
Note Geology shown in color with 10 classes of rock, and faults. Shows alignment of cross-sections on following sheets.
Spurr, Josiah Edward
Tourtelotte Park Mining Dist …
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Tourtelotte Park Mining District Sheet. Sheet XXII Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geologic cross-sections shown in color in 9 classes, and faults.
Hayden, F.V.
Drainage Map of Colorado.
1881
State Atlas
Authors Hayden, F.V.
Full Title Drainage Map of Colorado. Topography by A.D. Wilson, G.R. Bechler, Henry Gannett, G.B. Chittenden and S.B. Ladd. Department of the Interior, U.S. Geological and Geographical Survey of the Territories, F.V. Hayden, U.S. Geologist in Charge. March 1877. Sheet II.
Note Map shows the drainage of the state in blue with the railroads shown in black. Drainage that is dry during the majority of the year is noted by blue dots.
Spurr, Josiah Edward
Tourtelotte Park Mining Dist …
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Tourtelotte Park Mining District Sheet. Sheet XXIII Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geologic cross-sections shown in color in 9 classes, and faults.
Spurr, Josiah Edward
Tourtelotte Park Mining Dist …
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Tourtelotte Park Mining District Sheet. Sheet XXIV Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geologic cross-sections shown in color in 9 classes, and faults.
Hayden, F.V.
General Geological Map of Co …
1881
State Atlas
Authors Hayden, F.V.
Full Title General Geological Map of Colorado. Department of the Interior, U.S. Geological and Geographical Survey of the Territories, F.V. Hayden, U.S. Geologist in Charge. Surveyed in 1873, '74, '75 & '76. Sheet IV.
Note Map in full color. Map also serves as an index map for the geologic maps to follow.
Spurr, Josiah Edward
Aspen Mountain Sheet.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Aspen Mountain Sheet. Geology Sheet XXV. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. A.H. Thompson, Geographer. Morris Bien, Topographer in charge. Triangulation by Morris Bien. Topography by F.F. Grove. Surveyed in 1891. S.F. Emmons, Geologist in charge. Geology by J.E. Spurr. Assistant, G.W. Tower. Julius Bien & Co. Lith. N.Y. (1898)
Note Geology shown in color with 10 classes of rock, and faults. Shows alignment of cross-sections on following sheet.
Hayden, F.V.
North-western Colorado and p …
1881
State Atlas
Authors Hayden, F.V.
Full Title North-western Colorado and part of Utah. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. S.B. Ladd, G.R. Bechler, H. Gannett and G.B. Chittenden, Topographical Assistants. Surveyed in 1874 & '76. Sheet V.
Note Map without color.
Spurr, Josiah Edward
Aspen MountainSheet.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Aspen Mountain Sheet. Sheet XXVI Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geologic cross-sections shown in color in 10 classes, and faults.
Hayden, F.V.
Northern Central Colorado.
1881
State Atlas
Authors Hayden, F.V.
Full Title Northern Central Colorado. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. S.B. Ladd, G.R. Bechler, H. Gannett and G.B. Chittenden, Topographical Assistants. Surveyed in 1873, '74 & '75. Sheet VI.
Note Map without color.
Spurr, Josiah Edward
Smuggler Mountain.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Smuggler Mountain. Geology Sheet XXVII. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. A.H. Thompson, Geographer. Morris Bien, Topographer in charge. Triangulation by Morris Bien. Topography by F.F. Grove. Surveyed in 1891. S.F. Emmons, Geologist in charge. Geology by J.E. Spurr. Assistant, G.W. Tower. Julius Bien & Co. Lith. N.Y. (1898)
Note Geology shown in color with 9 classes of rock, and faults. Shows alignment of cross-sections on following sheets.
Hayden, F.V.
Central Colorado.
1881
State Atlas
Authors Hayden, F.V.
Full Title Central Colorado. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. A.D. Wilson, G.R. Bechler, H. Gannett and G.B. Chittenden, Topographical Assistants. Surveyed in 1874 & '75. Sheet VII.
Note Map without color.
Spurr, Josiah Edward
Smuggler MountainSheet.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Smuggler Mountain Sheet. Sheet XXVIII Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geologic cross-sections shown in color in 9 classes, and faults.
Hayden, F.V.
Western Colorado and Part of …
1881
State Atlas
Authors Hayden, F.V.
Full Title Western Colorado and Part of Utah. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. H. Gannett and A.D. Wilson, Topographical Assistants. Surveyed in 1874-'75 & '76. Sheet VIII.
Note Map without color.
Spurr, Josiah Edward
Smuggler MountainSheet.
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Smuggler Mountain Sheet. Sheet XXIX Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geologic cross-sections shown in color in 9 classes, and faults.
Hayden, F.V.
SW. Colorado and Parts of Ne …
1881
State Atlas
Authors Hayden, F.V.
Full Title SW. Colorado and Parts of New Mexico, Arizona and Utah. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. G.B. Chittenden and A.D. Wilson, Topographical Assistants. Surveyed in 1874 & '75. Sheet IX.
Note Map without color.
Spurr, Josiah Edward
Lenado Mining District Sheet …
1898
Geologic Atlas
Authors Spurr, Josiah Edward
Full Title Lenado Mining District Sheet. Sheet XXX Sections. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. Julius Bien & Co. Lith. N.Y. (1898)
Note Geologic map and cross-sections shown in color in 7 classes, and faults.
Hayden, F.V.
Southern Central Colorado an …
1881
State Atlas
Authors Hayden, F.V.
Full Title Southern Central Colorado and Part of New Mexico. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. A.D. Wilson, Topographical Assistant. Surveyed in 1874 & '75. Sheet X.
Note Map without color.
Hayden, F.V.
Composite: Colorado. V-X.
1881
State Atlas
Authors Hayden, F.V.
Full Title (Composite of) Colorado. Sheets V-X. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. A.D. Wilson, G.R. Bechler, H. Gannett, S.B. Ladd and G.B. Chittenden, Topographical Assistants. Surveyed in 1873-1876.
Note Composite map of the state without color.
Hayden, F.V.
North-western Colorado and p …
1881
State Atlas
Authors Hayden, F.V.
Full Title North-western Colorado and part of Utah. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. A.R. Marvine, A.C. Peale, E.M. Endlich, and C.A. White, Geological Assistants. Surveyed in 1874 & '76. Sheet XI.
Note Geologic map in full color.
Hayden, F.V.
Northern Central Colorado.
1881
State Atlas
Authors Hayden, F.V.
Full Title Northern Central Colorado. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. A.R. Marvine, A.C. Peale, and Wm. H. Holmes, Geological Assistants. Surveyed in 1873, '74 & '75. Sheet XII.
Note Geologic map in full color. Thermal areas, and gold and silver mining areas are noted.
Hayden, F.V.
Central Colorado.
1881
State Atlas
Authors Hayden, F.V.
Full Title Central Colorado. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. E.M. Endlich, A.C. Peale, and Wm. H. Holmes, Geological Assistants. Surveyed in 1873 '74 & '75. Sheet XIII.
Note Geologic map in full color. Thermal areas, and gold and silver mining areas are noted.
Hayden, F.V.
Western Colorado and Part of …
1881
State Atlas
Authors Hayden, F.V.
Full Title Western Colorado and Part of Utah. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. A.C. Peale, and Wm. H. Holmes, Geological Assistants. Surveyed in 1874-'75 & '76. Sheet XIV.
Note Geologic map in full color. Thermal areas, and gold and silver mining areas are noted.
Hayden, F.V.
SW. Colorado and Parts of Ne …
1881
State Atlas
Authors Hayden, F.V.
Full Title SW. Colorado and Parts of New Mexico, Arizona and Utah. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. Wm. H. Holmes, and F.M. Endlich, Geological Assistants. Surveyed in 1874 & '75. Sheet XV.
Note Geologic map in full color. Thermal areas, and gold and silver mining areas are noted.
Hayden, F.V.
Southern Central Colorado an …
1881
State Atlas
Authors Hayden, F.V.
Full Title Southern Central Colorado and Part of New Mexico. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. F.M. Endlich, Geological Assistant. Surveyed in 1874 & '75. Sheet XVI.
Note Geologic map in full color. Thermal areas, and gold and silver mining areas are noted.
Hayden, F.V.
Composite: Colorado. XI-XVI.
1881
State Atlas
Authors Hayden, F.V.
Full Title (Composite of) Colorado. Sheets XI-XVI. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. A.R. Marvine, A.C. Peale, F.M. Endlich, Wm. H. Holmes, and C.A. White, Geological Assistants. Surveyed in 1873-1876.
Note Composite geologic map in full color. Thermal areas, and gold and silver mining areas are noted.
Hayden, F.V.
Geological Sections. Western …
1881
State Atlas
Authors Hayden, F.V.
Full Title Geological Sections. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. Western Half. Sheet XVII.
Note Includes sections to accompany sheets XI, XIV and XV. In full color.
Hayden, F.V.
Geological Sections. Eastern …
1881
State Atlas
Authors Hayden, F.V.
Full Title Geological Sections. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. Eastern Half. Sheet XVIII.
Note Includes sections to accompany sheets XII, XIII and XVI. In full color.
Hayden, F.V., Holmes, Willia …
Panoramic Views.
1881
State Atlas
Authors Hayden, F.V., Holmes, William Henry, 1846-1933
Full Title Panoramic Views. W.H. Holmes. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. Sheet XIX.
Note Three views included: 1) The Pikes Peak Group, 2) View of the Sawatch Range, 3) Central Portion of the Elk Mountains.
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