- East of Crum Creek, 1 1/2 miles N.E. Swarthmore.1
- Fawk's Run, Newtown.1
- Harrington1
- Indian River Inlet State Park, south of Rehoboth Beach.1
- Indiana2
- Iowa6
- Kent16
- Keweenaw4
- Killen Pond State Park, 3.5 miles southeast of Felton2
- Kortright, Brookdale Farm, 3 miles south by west of West Harpersfield1
- Laurel1
- Maquoketa River valley and adjacent bluffs, Backbone State Park, north of Dundee3
- Margins of Killen's Pond; along trail around the Pond, ca. 5 mi. north of Marvels Crossroads1
- Michigan4
- Milton, along DE Rt. 16, 0.7 miles east of DE Rt. 30.1
- Moist E. bank of Darby Creek, 1 mile S., Adele.1
- Mount Cuba2
- Muddy bank of Darby Creek, 1 mile S. Adele1
- N inters. of DE 273 & 4 in Ogletown1
- Naylor Creek, Old Quarry Hole N. of Media S.L.R.R.1