Mount Holyoke's collection of USGS topographic maps (topos) belong to the Department of Geology and Geography (ask about these maps in the department office in room 304 in Clapp). This collection is distinctive in that it is a historic collection containing older editions of many of the same maps making possible comparisons over time.
The University of Massachusetts, Amherst and Amherst College each maintain a current collection of US topographic maps. The library at Hampshire College has a CD-ROM version of the Massachusetts topos.
Additional scanned images of USGS topos are available via the Internet: