Smallest, and only lithos in the group, are the four .75" in the bottom row. Largest are 1.25". All include the word "Work" or "Worker" or "Workman" or "Workers." The 4 lithos are from the Steel Workers Union and 2 of these have the slogan "'Keep 'Em Rolling'" or "Remember Bataan." Four buttons in various designs and colors are for the "Columbian Rope Company." Group includes "Packard" car button. Rare "Moose River War Worker." Last button in row 1 is a sample which includes text "Firm Name Here." All Exc. to Mint and displaying Mint. Numerous rarities.