The Beatty Cramer House is one of the most architecturally unique and oldest known standing structures in Frederick County, Maryland. The house is a combination of the 1748 Beatty portion of the structure, the 1855 Cramer addition, and later renovations. In 1999, members of MAS excavated over 165 shovel test pits around the house. In 2005, the artifacts were curated, and in 2020, a final report on the excavations was produced and turned over the Frederick County Landmarks Foundation, the property owner. This is the largest project in MAS history that was completed in its entirely by members with professional supervision. A copy of the final report is available in the Maryland Room at the C. Burr Artz Library.