Author
Aaron, John M.
1 results
Adams County (Pa.). Office of Planning and Development
1 results
Adrian, Betty M.
2 results
Ahearn, Elizabeth A.
1 results
Aichele, Steven S.
1 results
Algermissen, Sylvester Theodore, 1932-2006
1 results
Allegheny County (Pa.). Health Department
2 results
Allegheny County Sanitary Authority
2 results
Alliance for the Chesapeake Bay
1 results
Alvord, Donald C. (Donald Clayton), 1922-
1 results
America's Industrial Heritage Project
2 results
Anderson, J. Alton
1 results
Anderson, Peter W.
1 results
Anderson, Robert H.
1 results
Anderson, Robert M., 1961-
1 results
Appalachian Regional Commission
4 results
Arndt, Harold H.
6 results
Ator, Scott W.
1 results
Bailey, James F.
2 results
Baker, R. C.
1 results
Baldwin, D. H.
1 results
Balsley, J. R.
1 results
Barker, James L., 1936-
14 results
Barlow, Roger (Roger A.)
1 results
Barnes, Ivan, 1931-
1 results
Barnes, John Henry, 1946-
1 results
Barry Lawson Associates
1 results
Barton, Gary J.
4 results
Bascom, F. (Florence), 1862-1945
5 results
Bayley, William Shirley, 1861-1943
1 results
Beamer, N. H.
1 results
Beard, Mark M.
3 results
Beaver, Mark R.
2 results
Becher, Albert E.
3 results
Bender, Jeffrey K.
1 results
Bergin, M. J. (Marion Joseph), 1927-
2 results
Berkheiser, Samuel W.
1 results
Berks County Conservancy
1 results
Berryhill, Henry L., Jr. (Henry Lee), 1921-2013
5 results
Bickford, Tammy M.
3 results
Biesecker, James E., 1941-
1 results
Bilger, Michael D.
7 results
Bingham, Donald L.
1 results
Bird, Philip H.
8 results
Bjerklie, David M.
1 results
Blakeslee, Carrie J.
1 results
Blickwedel, Roy S.
3 results
Blust, Sandra
1 results
Bossert, April
1 results
Bradford County Conservation District (Pa.)
1 results
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