1. Paul Smith Experimental Forest historical photo archive
- Author(s):
- Roach, Skylar K.; Buchanan, Anna G.; Kenefic, Laura S.
2. County-level agroforestry reported in the 2017 and 2022 U.S. Census of Agriculture (2nd Edition)
- Author(s):
- Kellerman, Todd A.; Feibel, Samuel
3. County-level agroforestry reported in the 2017 U.S. Census of Agriculture
- Author(s):
- Kellerman, Todd A.
4. Historical maps of land use in Puerto Rico in 1951
- Author(s):
- Helmer, Eileen H.; Córdova, Juan R.; Quiñones, Maya; Hubing, Nick
5. Nebraska windbreaks original plantings (1935-1942)
- Author(s):
- Carman, Richard; Kellerman, Todd A.