Topographic and geological survey of Pennsylvania made in co-operation with the United States Geological Survey, 1899-1906. - Pennsylvania. Bureau of Topographic and Geologic Survey (Harrisburg, Pa., Harrisburg Publishing Co., state printer, 1906)
George W. McNees, Andrew S. McCreath, Richard R. Hice, commissioners.
Appendices.--A. Legislative acts and contracts. B. Triangulation and primary traverse. C. Meridian lines and magnetic determinations. D. Results of spirit leveling in Pennsylvania for the years 1899 to 1905, inclusive, by S. S. Gannett and D. H. Baldwin. E. List of completed topographic maps. F. Geological publications.
Keywords: Topographical surveying; Surveying; Geology -- Pennsylvania