New York: William A. Wheeler, 1865. Illustrated with a double page map of ""The Oil Territory of the Pacific Coast Petroleum Co."" by J. H. Colton, partially printed in colour.
Quarto, original printed pink wrappers. Wrappers a little discououred in centers, lower front wrapper lacks lower right corner, else fine.
As Thomas W. Streeter noted in his own copy, ""This report signed by Silliman as 'Prof. of General and Applied Chemistry in Yale College' and dated, 'New Haven, Co. February 18th, 1865' is one of the earliest relating to a California oil property and the first, as fas as I know, on oil prospects in San Luis Obispo County. The colored map with its inset is of great interest."" . [Sabin 81054. Rocq 13203 (locating 2 copies)].