These Pennsylvania USGS maps are available free to libraries until December 16. US postage will be paid, but not to requests sent outside of the United States.
https://psu.box.com/s/1v4s732iqbcep0zr3cvcpt7vm7y2ka64
Send requests to:
Jenny Litz
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Jenny Litz
Maps Library Assistant, Donald W. Hamer Maps Library
Penn State University Libraries
1 Pattee Library
University Park, PA 16802