This is a stack of 8.5 x 11 sheets 3/4 inch thick. The material is mimeographed, with lots of maps, charts, even a few photos. Clean, unmarked condition but some of the staples have been removed.
Bulletin 1, April 1954: geophysics, surface exploration in central Pa.
Bull. 2, Nov 1957: Hagerstown convention notes and abstracts
Bull. 3, Feb 1958: ditto, MAR Constitution
Bull. 4, Nov 1958: SHIPPENSBURG area caves (17 pages with maps)
Bull. 5, Oct 1960: western Pa, Pa cave list, and index to Bull. 1-5, (76 pages)
Bull. 6, Oct 1964: caves of southern Cumberland Valley (Cumberland, Dauphin & Franklin counties), 126 pages
Bull. 7, Feb 1969: Fulton County, Pa. Some foldout maps, even some unfaded color ditto maps.
Bidding starts at $20 and will end at midnight EDT April 30, 2013. Postage will be an additional $5.
Good luck!
Chuck Porter, 5330F