The Detroit Mechanics Society was established in 1818. The printers of Detroit issued their own journal, the Rat Gazette, when they struck in 1839. A more formal union was established by the printers in 1849, which served as a model for other unions. 1864 marked the origin of 3 aggressive bodies: the Cigar Makers' Union, the Carpenters' Union, & the Operative Plasterers' Union.
- Quaife & Glazer, Michigan, p. 307