I think this farm might be directly south of Resthaven Cemetery along Muddy Run. The upper left shows the outline of what is now the cemetery. The Muddy Run creek is just south of the fence line, zig-zagging through the property and empties into the Monocacy River (behind the property). This farm is just south of Hansonville Road on the now northbound side of Route 15. I think the family that lived (or maybe even still lives there) is named Snyder.

9210 Catoctin Mountain Hwy., Frederick. See, also, photo #32.