Golf cartoon blotters from Minnesota Mining & Mfg. Co., aka 3M. Identified (on 6/25) by DD Degg of the Daily Cartoonist as Divot Diggers cartoonist Vic Forsythe (of Joe Jinks fame) with a 1926 example.
600 dpi scans at
These will be donated to Library of Congress' prints and photographs division in summer 2025.