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1861

Beckwith, Lieut., Schumann, C.

Valley of the Mud Lakes.

Exploration Book

1861

Beckwith, Lieut., Schumann, C.

Valley of Humboldt River at Lassen's Mea …

Exploration Book

1861

Beckwith, Lieut., Schumann, C.

Madelin Pass.

Exploration Book

1861

Beckwith, Lieut., Schumann, C.

West End of Madelin Pass.

Exploration Book

1861

Beckwith, Lieut., Schumann, C.

No. Slopes of the Sierra Nevada.

Exploration Book

1861

Beckwith, Lieut., Schumann, C.

Portion, main mountain passage of Upper …

Exploration Book