Found 2 documents.
You have to log in. Please log in from the user panel.
Bechler, Gustavus R.
Map of the upper Geyser basin on the upper Madison river, Montana Terr. / after a reconnoissance by Gustavus R. Bechler, chief top. Snake River Division
[Washington] : U.S. Geological Survey of the Territories, 
Map of the lower Geyser Basin on the upper Madison river / after a reconnoissance by Gustavus R. Bechler