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Beltsville Agricultural Research Center, East Farm, Deciduous Research Forest (Plot 36) at W end of power line N of Beaver Dam Rd near fields NE of intersection of Soil Conservation Rd and Beaver Dam Rd (Plot 37).

Beltsville Agricultural Research Center, East Farm, N shore of Beck Lake (Plot 35) and adjacent Coniferous Research Forest (Plot 34) S of Beaver Dam Rd and E of Soil Conservation Rd.

College Park; near college

Beltsville Agricultural Research Center, East Farm, WMATA Migration Area (Plot 52), east of Springfield Road and north of the ariport, around and in a man-made pond

Beltsville Agricultural Center, Central Farm, woods E and N of building complex, along branch of Beaver Dam Creek (Plot 26- "FMOD Storage Yards" and eastern end of Plot 27 "Early Succession Scrub Pine Forest")

Beltsville Agricultural Research Center, East Farm, Wetland Research Forest (Plot 51) E of Springfield Rd and N of the airport, along the powerline just N of the road to the airport.

College Park; 1.25 miles NW of Rossbourg Inn

Flood plain along Potomac River, SE Big Pool

Near Dam #5 along the C&O Canal

Greenbelt Park, Greenbelt

College Park; Near Blandfords cow stable

College Park; Near Cambridge Complex, University of Maryland

Pond near Leonardtown

In Wicomico Creek; 5-6 miles from Morgantown, course 21 degrees

Glen Cove, on deciduous forested slopes above the Susquehanna River, about 0.7 mile northeast of Berkeley and 10 miles upstream from Harve de Grave.

Rte 4 bridge, Patuxent River, Waysons Corner nr Mill Creek

Eckington, D.C.

Above Widewater, Potomac

Whaleyville

Rock Point, Potomac Strand

Pasadena; Town of Pasadena, MD Rte 100, between Raynor Boulevard & Magothy Bridge Road, MD Rte 607

Potomac River at Great Falls

2.8 mi S of Crumpton, along Burchard Sawmill Rd just N of Pondtown Rd, under power line right of way on W side of road.

Douglas Point, Blubaugh House

Roadside, Rt 224

Grantsville; Little Meadows, along Meadow Run, cutoff from Rte 48 at Rte 40

Near Swamp Creek, W tributary of the Patuxent River, 12.75 meters, bearing 172° from Upper Marlboro

Douglas Point, Halseden place

Douglas Point, old road to Chiles house site.

Spout Run

Douglas Point, lane from Halseden site to Blubaugh place.

Dewart, old field on E side of the Susquehanna River, Dr. I. C. Hant's Farm

Pine Swamp (Cranesville Swamp), forest 0.5 mi NE of Lake Ford, W of Cranesville Rd about 9 airline mi NNW of Oakland.

On State Rte 5, N of Mechanicsville

Vicinity of railroad right-of-way and the Potomac River, just N of the Hwy 15 bridge, Point of the Rocks

Hagerstown; Wagaman Rd along railroad tracks about 50 yds from road heading N.

Governors Bridge Rd at Patuxent River, area N of road

4 mi N of I695, 2 mi off Rt 140 on Gwynbrook Lane along stream bed.

MacArthur Blvd. 1.5 mi NW of Brickyard Rd. 150 yds. W of widewater along C&O Canal

MacArthur Blvd 1.5 mi NW of Brickyard Rd 0.8 mi NW of Anglers Inn, 300 yds W of foot bridge along C&O canal, 30 ft from river bank

MacArthur Blvd 1.5 mi NW of Brickyard Rd, 150 yds W of "wide water" along the C&O Canal.

Middle Patuxent River Area, between Rt 32, Rt 108, Trotter Rd and river.

Waste area around building on Potomac River end of gravel road (metorological tower), 1.5 mi S of Liverpoor Point Rd and MD Rt 224, Douglas Point.

Near Chiles house site

behind townhouses on Brinkley Station Drive .1 mile S of Fisher Road

Kirkham Station, along MD Rt 33, Saint Michael's Rd at Traveler's Rest Rd, vacant lot at site of old gas station.

Parkton, Spooks Hill Rd. at Parsonage Rd. at N end of Frog Hollow Cove, along roadside at edge of woods.

Manchester, Kridlers Schoolhouse Road, at Garrett Road, woods along roadside

Ft. McHenry

Parkton, Spooks Hill Road at Parsonage Road at north end of Frog Hollow Cove; 39.644628 -76.720944