Keep on Truckin' is a one-page comic by Robert Crumb. It was published in the first issue of Zap Comix in 1968. A visual riff on the lyrics of the Blind Boy Fuller song "Truckin' My Blues Away", it consists of an assortment of men, drawn in Crumb's distinctive style, strutting confidently across various landscapes. The strip's drawings became iconic images of optimism during the hippie era.
Crumb was offered $100,000 by Toyota to reproduce the image for a Keep On Truckin' advertising campaign, but turned it down.
The copyright on this image has been repeatedly violated, and it has been widely reproduced on T-shirts, posters, belt buckles, mudflaps, and other items. In the early 1970s, Crumb's lawyer started threatening lawsuits against anyone using the image without permission. Crumb and A.A. Sales, a producer of unlicensed Keep On Truckin' merchandise, reached a settlement of $750 for the past usage. But A.A. continued to sell unlicensed products after the settlement without paying additional license fees. In 1973, Crumb went to the U.S. Federal Court, and wound up in the courtroom of Judge Albert Charles Wollenberg, who had previously ruled against the Air Pirates. A.A. Sales claimed the work was in the public domain, because Crumb had not included the copyright symbol on the work, although he had in Zap #1 as a whole. The work was covered under the 1909 Copyright Act, and any omission of notice caused the work to be public domain. The drawing had appeared on the business card of Crumb's publisher without the copyright symbol. Based on that, Wollenberg granted A.A. Sales' request for summary judgment and Keep On Truckin' became public domain. In 1977, the Ninth Circuit Court reversed that decision, and it returned to copyrighted status.
The Internal Revenue Service pursued Crumb for thousands of dollars of taxes owed, as if he had been collecting royalties all along. Recently, Crumb has sued various entities to defend the copyright, including Amazon.com in 2005.