About Glass Plate Negatives

1.   Muir, Heather A. Images on Glass Page. 15 May 1998. School of Library and Information Studies, University of Wisconsin-Madison. 28 March 2003

2.  Vail, Stuart. Glass Plate Negatives Page. 2002 . 28 March 2003 <http://www.thescreamonline.com/photo/
photo2-4/glass_slides/glass.html>.