One of the "Masters" changing into his swimming costume at Camp Marienfeld, circa 1921 

Camp Marienfeld was one of the first boy's camps in the USA, established in 1899. The Camp buildings were scattered along a hilltop, which overlooked Silver Lake, and with a view of the surrounding hills and distant mountains. In the 1950's the camp was abandoned and torn down.

An extremely interesting website on this Camp can be found on:

home.att.net/~marienfeld22