Historical sketch of geological explorations in Pennsylvania and other states
By: by J. P. Lesley. With an appendix containing the annual reports of the state geologist to the Board of commissioners.
Series: Pennsylvania. Geological survey, 2d. [Report of progress A]; Report of progress (Geological Survey of Pennsylvania) -- A.
Publisher: Pub. by the Board of ocmmissioners for the Second geological survey
Published: 1876
Place of publication: Harrisburg
Language: eng
Number of pages: 200
Subjects: Geological Society of Pennsylvania. -- Philadelphia.; Geology -- Pennsylvania.; Geology -- History.
Notes: At head of title: Second geological survey of Pennsylvania: 1874-'5-'6.

"The Geological society of Pennsylvania; and what it did to bring about the first Geological survey of the state": p. A29-52A.