VIII.-MAPS.

PREPARED BY THE UNITED STATES GEOLOGICAL SURVEY OF THETERRITORIES.

1871.

1. Yellowstone Lake.

2. Lower Geyser Basin of Firehole River.

3. Upper Geyser Basin of Firehole River.

4. Yellowstone National Park.

5. Parts of Idaho, Montana, and Wyoming Territories. Prelim-

inary map for field-use.

1872.

6. Map of the Lower Geyser Basin on Firehole River, resurveyed

by Bechler in 1872, and engraved on stone (scale, 8 miles to1 inch).

7. Map of Upper Geyser Basin of Firehole River.

8. Map of Lake Henry and the Sources of the West Fork of

Snake River.

9. Map of Shoshone Geyser Basin and Lake.

10. Map of the Sources of Snake River (reduced from the final

map).

11. Montana and Wyoming Territories, embracing most of the

country about the sources of the Madison, Gallatin, andYellowstone Rivers, in cbntour-lines. (Final map on a scaleof s miles to 1 inch.)

12. Map of the Sources of Snake River and its Tributaries. (Final

map, scale 5 miles to 1 inch.)

13. Field-map of Colorado based on the United States land-survey

for use during the season of 1873.

14. Geological Map of Montana and Wyoming Territories, &c.

(same as No. 11, with geological colors).

13. Geological map of the Sources of Snake River, &c. (same asNo. 12, with geological colors).

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