surgeon John Collins Warren (1778-1856): Remarks on some fossil impressions in the sandstone rocks of Connecticut River (Boston Soc. Nat. History 1854) ;
photographer John G. Case ; photographer William H. Getchell ;
geological and paleontological photography
J. Paul Getty Museum ;
Kirchheimer 1982: 22 & fig. 11 ;
Active in Boston in the company of Silsbee, Case & Co.
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