Folmer & Schwing Co. (New York, NY)
Reversible Back Graphic Special - c. 1901
Photographic Encyclopedia, Andrew J. Lloyd & Co., (Boston, MA),
1901, p. 49 48 References: 
Notes:
Photographic Encyclopedia, Andrew J. Lloyd & Co., (Boston, MA),
1901, p. 49
The International Annual of Anthony's Photographic Bulletin, Volume
XIII for 1901, edited by W. I. Scandlin, E. & H. T. Anthony & Co.
(New York, NY), copyright 1900, ads p. 56
