Remarks on Some Fossil Impressions in the Sandstone Rocks of Connecticut River by John C. Warren, M. D.
Boston: Ticknor and Fields, 1854. 8vo (231 x 141 mm). 54 pages, plus a folding photographic frontispiece, being an original salt print of a Greenfield, Massachusetts trackway slab with dinosaur tracks, executed by George M. Silsbee, and with two additional engraved vignettes in the text. Original blue cloth blocked in.....