REMOVE

1. United States
2. Wyoming
3. Gannett, Henry

WHAT

1. Atlas Map (6)
2. Geologic Atlas (6)
3. Geology (4)
4. Topography (2)

WHERE

1. Yellowstone National Park (6)

WHO

1. Aplin, S.A., Jr. (3)
2. Chase, H.S. (6)
3. Hague, Arnold (6)
4. Iddings, Joseph Paxton (4)
5. Julius Bien & Co. Lith. (6)
6. Leffingwell, W.H. (1)
7. Renshawe, J. H. (John Hen … (6)
8. Tweedy, Frank. (4)
9. United States Geological … (6)
10. Weed, Walter Harvey (4)
11. Wright, George M. (2)

WHEN

1. 1904 (6)