Vintage "The Photo-Beacon" Exposure Card Booklet 1906

Description

Hello, I'm offering a Vintage copy  of "The Photo-Beacon" Exposure Card Booklet from 1906. It basically explains shutter speed settings and exposure times with several places to write them down as you go along.
It's 8 pages including the front and back covers, measures about 5" x 3". It's in overall excellent condition for Its age with a little bit of red discoloration on the back cover.
Please see all pictures and let me know if you have any questions!