Maps, Data, Publications, and Resources
Converting paper geologic maps to digital products; the search for an effective method. Abstracts with Programs - Geological Society of America 35, 276 - 276 (2003).
Geomorphology of New England. USGS Professional Paper 18 (U.S. Geological Survey, 1982). at <https://pubs.er.usgs.gov/publication/pp1208>