Two hands shake within a black outlined red oval between red text over a yellow background.
A "jobber" is an informal term for a wholesaler. According to the Oxford English Dictionary, this meaning dates from the mid-seventeenth century and may be used to refer to anyone buying and selling goods. In the North American context, the phrase, "Get it from your jobber," was often used in newspaper advertisements throughout the early twentieth century. The items advertised ranged from toilet tanks to car parts. The illustration seen on the button was trademarked by Indiana's Automotive Advertisers Council (AAC) in 1949 and by Canada's Smart & Biggar in 1950.
AAC was founded in 1941 and had offices throughout the America, including a branch in Chicago, Illinois and was once headquartered in Elk Grove Village, Illinois. AAC changed its name in 1994 to the Automotive Communications Council and is currently headquartered in Bethesda, Maryland.
(Sources: Jobber, n.2 [Def. 2]. (September 2014). OED Online, Retrieved September 22, 2014 from http://www.oed.com/view/Entry/101405?isAdvanced=true&result=1&rskey=AO30t7& and Canadian Intellectual Property Office. (September 2014). Canadian trade-mark Data, Retrieved September 22, 2014 from http://www.ic.gc.ca/app/opic-cipo/trdmrks/srch/vwTrdmrk.do?lang=eng&fileNumber=207319.)