- Patuxent Research Refuge, Plot 26681
- Patuxent Research Refuge, Plot 26701
- Patuxent Research Refuge, Plot 3639.1
- Patuxent Research Refuge, Plot 43521
- Patuxent Research Refuge, Plot 4467, between North Telegraph and Kluckhuhn Roads1
- Patuxent Research Refuge, Plot 53441
- Patuxent Research Refuge, Seepage Forest Lower end of Refuge, Plot 31941
- Patuxent Research Refuge, bluff forest northwest of buildings, plot 16781
- Patuxent Research Refuge, bottomland forest near river and northeast of buildings, plot 37031
- Patuxent Research Refuge, field along Kluckhuhn Road, near barn, Plot 44591
- Patuxent Research Refuge, lower part of Refuge, east side Plot 31411
- Patuxent Research Refuge, north Telegraph Road, plot 44751
- Patuxent Research Refuge, northwest of buildings, plot 11951
- Patuxent Research Refuge, under Willow Oak Barn on Kluckhuhn Road, Plot 54411
- Patuxent Research Refuge, upland oak region of lower end of Refuge, Plot 21561
- Plant Industry Station, 1 mile south of Beltsville1
- Plot 3641, Patuxent Research Refuge.1
- Plot 3695, n.e. of buildings, Patuxent Research Refuge.1
- Powder Mill Bogs1
- Powdermill "Bogs", Ashfield Rd., 2 miles west of Beltsville1