Revolutionary Printing Cooperative Union Bugs

"The Revolutionary Printing Cooperative, which predated the Detroit Printing Co-op, used two different marks, which functioned similarly to a union bug. The first has the name of the cooperative encircling a red and black flag. It appears on at least two publications and their 1969 price list. The two flags represent anarchism (black) and communism (red). They began using an actual union mark when several Co-op users became dues-paying members of the IWW (Industrial Workers of the World). A version, with the words Revolutionary Printing Cooperative encircling the IWW logo, appears on some publications from early 1970." The Detroit Printing Co-op by Danielle Aubert.