Camp Greentop design modifications at Greentop to accommodate handicapped children reduced capacity to 98. Greentop is also known as Camp 2: Camp 1 is Camp Misty Mount and Camp 3, originally called Camp Hi-Catoctin and located at a much higher elevation, became Camp David. Camp Greentop Historic District was listed on the National Register of Historic Places in 1989. Camp Greentop Camp Greentop is located in Catoctin Mountain Park near Thurmont, Maryland. The camp was built by the Works Progress Administration labor program in the development of what was then known as the Catoctin Mountain Recreational Demonstration Area, and comprises 22 rustic
Camp Agawam peers." David Mason and his wife Peg founded the Main Idea program in 1971, a charitable project that sponsors attendance at the camp for disadvantaged boys from southern Maine towns. Mason states: "I wanted to do something for the boys living around here, who see out-of-state campers come and go each year, but think that camp is an experience that will never come their way." By 2005, the program had involved over 2,600 boys, and had gained local and national media coverage. Senator Susan Collins described the initiative in 2009 as "truly a meaningful investment in Maine's most precious resource—our