REMOVE

1. Symons, T.W.
2. Wheeler, G.M.

WHAT

1. Atlas Map (1)
2. National Atlas (1)

WHERE

1. Colorado (1)
2. Montana (1)
3. North Dakota (1)
4. South Dakota (1)
5. Wyoming (1)

WHO

1. Gamble, W.H. (1)
2. Mitchell, Samuel Augustus … (1)
3. Williams W. (1)
4. Ziegler & McCurdy (1)

WHEN

1. 1874 (1)