Place
- Washington8
- Wicomico8
- Frederick6
- SE of Laurel6
- Cecil5
- Plummer's Island5
- Anne Arundel or Montgomery4
- High Island4
- Queen Anne's4
- Cove Point Marsh, Cove Point, along the Chesapeake Bay.3
- Cunningham Swamp, at Western Maryland 4H Center ca. 10 mi SSE of Grantsville3
- Kent3
- Liverpool3
- Patuxent Research Refuge, Plot 16783
- Salisbury.3
- Somerset3
- St. Mary's3
- Vicinity of Lanham3
- "The Glades," 4.2 miles east of McHenry2
- Annapolis.2