Creators
- Maps71
- Santy, Lorraine68
- Stephen W. Schaeffer68
- Olendorf, Robert K57
- Santy, Lorraine C56
- Hswe, Patricia55
- Asif ud-Doula49
- HAILLEY MARIE FARGO47
- Lang, C. Max47
- Peter D. Usher47
- Amit M Schejter46
- CAROLYN TRIETSCH45
- Pennsylvania State University44
- Sarah Hartman-Caverly44
- ICIK43
- Natalie Imirzian41
- Trampush, Shelia Marie41
- Mineral Industries Experiment Station39
- Scott A Showalter38
- Commonwealth of Pennsylvania37