1971. 2012-03-12T12:50:47Z. 2012-03-27T23:58:25Z. Colton, Roger B. (Roger Burnham), 1924-. U.S. Geological Survey. English. Public. Massachusetts, Hampden County, Connecticut, and Hartford County.
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1970. 2012-03-05T16:48:20Z. 2022-12-08T04:39:10Z. Warren, Charles R., 1913-. U.S. Geological Survey. English. Public. Connecticut, Litchfield County, and Hartford County.