Harry Diamond Laboratories, Blossom Point, Maryland No description specified. 1-2 (2 Records) Documents Letter from Harry Diamond Laboratories to US Army Corps of Engineers, Baltimore District, Firing Ranges and Possible Contamination at HDL/TA, Blossom Point, Maryland (1977) Letter from the Interagency Archeological Services-Atlanta to JRB Associates, Memorandum of Agreement (1979)