Selaus tekijän mukaan kokoelmassa A. E. Nordenskiöldin kokoelman irtokarttoja
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Map of the Lower Geyser Basin of the Upper Madison River
Bechler, Gustavus R ([S.l.], 1872) -
Map of the sources of Snake River : with its tributaries together with portions of the headwaters of the Madison and Yellowstone from surveys and observations of the Snake River Expedition
Bechler, Gustavus R; Bradley, Frank H ([S.l.], 1870) -
Map of the sources of Snake River : with its tributaries together with portions of the headwaters of the Madison and Yellowstone from surveys and observations of the Snake River Expedition
Bechler, Gustavus R; Stevenson, James ([S.l.], 1870) -
Map of the Upper Geyser Basin on the Upper Madison River, Montana Terr.
Bechler, Gustavus R ([S.l.], 1870) -
Preliminary map of Central Colorado showing the region surveyed in 1873 and 1874
Hayden, F. V; Gardner, J. T; Bechler, Gustavus R ([Washington], 1874)