@misc{indiciae172f775ede23, title = {Aeromagnetic map of the Thomaston quadrangle and part of the Torrington quadrangle, Litchfield, Hartford, and New Haven Counties, Connecticut}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1973}, doi = {10.3133/gp844}, url = {https://pubs.usgs.gov/publication/gp844}, note = {Source identifier: gp844} }