Other
- Arcadia Publishing 1 results
- Becher, Drew 1 results
- Central Electric Railfans' Association 1 results
- Crane, Tom 1 results
- DeGraw, Ronald, 1942-2006, 1 results
- Elliott, Joseph E. B., 1 results
- Evans, Janet 1 results
- Gunther, Steve 1 results
- Hahner, David P. 1 results
- Hildebrandt, Rachel 1 results
- Lemheney, Sam 1 results
- Miller-Lanning, Darlene 1 results
- Old York Road Historical Society 1 results
- Pennsylvania Horticultural Society 1 results
- Pezzati, Alessandro 1 results
- Popkin, Nathaniel R., 1 results
- Poxon, Marita Krivda 1 results
- Sebree, G. Mac (George Mac), 1932-2010, 1 results
- Springirth, Kenneth C. 1 results
- University of Pennsylvania. Museum of Archaeology and Anthropology 1 results
- Weiss, Arnine Cumsky 1 results
- Wolgemuth, Rachel, 1 results
- Woodall, Peter, 1 results
- Wren, David Nelson, 1 results
- Yaster, Carol, 1 results