I am building an 8X10, and I've found a very nice ground glass/filmholder assembly from a 1903 Rochester Optical/Eastman Kodak camera. It will mount on the frame for the bellows (which I've designed and built), and should (this needs checking) have the correct dimensions for focusing (.255-.265 film plane to outside of holder). My concern is filmholder width. A contemporary 8X10 holder has a width of about 9-1/4". The Rochester/Eastman looks to take something on the order of 9-7/8" I assume they didn't do metric). There are a few wooden "Kodak" 8X10 filmholders for sale on eBay, of unknown age, and I've emailed sellers for actual measurements, thus far to no reply. I can readily shim down my frame to accept smaller-width modern 8X10 filmholders, but before I do I wonder if anyone out in the LF has any info on this topic. Thanks.... Al Lockwood