Someone who asked to remain anonymous kindly sent me a gift out of the blue last month of the May 1937 edition of the I.W.W. publication, The One Big Union Monthly.
Featured on the back cover is an advertisement for stickers on sale for $2.00 per thousand. It still surprises me how prolific these stickerettes/stickers were in the early 1900s and how rare they are to find today. While I recognize most of the images, the two black and white cartoons featured here are completely new to me.
These are some of the actual stickers.
This was also on the inside of the back cover.