1. Historical maps of land use in Puerto Rico in 1951
- Author(s):
- Helmer, Eileen H.; Córdova, Juan R.; Quiñones, Maya; Hubing, Nick
2. County data related to forest dependence and community capitals, 2014-2019
- Author(s):
- Frey, Gregory E.; Kallayanamitra, Chalisa; Wilkens, Philadelphia; James, Natasha A.
3. University of Pennsylvania campus tree inventories, 2003 and 2014
- Author(s):
- Roman, Lara A.; Fristensky, Jason P.; Lundgren, Robert E.; Cerwinka, Chloe E.; Lubar, Jason E.