. Report upon United States Geographical surveys west of the one hundredth meridian. . SpragimM. A TOWNSENDIA ROTHROCKII. B ASTER COLO RAD OENSIS.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Geographical Surveys West of the 100th Meridian (U. S. ); Wheeler, George M. (George Montague), 1842-1905; Humphreys, A. A. (Andrew Atkinson), 1810-1883; Wright, Horation Gouverneur, 1820-1899; Hodge, Frederick Webb, 1864-1956. fmo; Museum of the American Indian, Heye Foundation. fmo; Huntington Free Library. fmo. Washington, Govt. print. off.