Well we have wandered a long ways from the original question about the Widgeon Duck Club magazine article. I googled and the best I found was a picture that said it was the Widgeon Duck Club near Delano on a California Waterfowlers web site.
If my 1903 UMC ammo catalogue is to be believed you could get your paper cased 16-gauge shells loaded up in the regular 2 9/16 inch case, a 2 3/4 inch case, a 2 7/8 inch case or a 3-inch case. Their 16-gauge brass shells were only offered 2 1/2 inches in length. I've only found one early 3-inch 20-gauge shell and it is a red Remington-UMC Arrow case stamped HAND LOADED on the side with a orange and black VL&D NEW YORK over shot wad. Shell seenh here with my 2-frame GH-grade 12- and 20-gauge gun --
