1. The Arcadian Observer. Official paper of the United States Army Balloon School at Arcadia, California. (Miscellaneous single issues) Supplement to The Arcadian Observer, September 1918, was gift from Sierra Madre Public Library on March 17, 2004.
1. The Arcadian Observer. Official paper of the United States Army Balloon School at Arcadia, California. (Miscellaneous single issues) Supplement to The Arcadian Observer, September 1918, was gift from Sierra Madre Public Library on March 17, 2004.