Analysis of information sources in references of the Wikipedia article "Schwinn Bicycle Company" in English language version.
John T. Bill introduced the Penguin to their many So-Cal dealers on March 3rd 1963, at the open house of their new corporate facilities in Glendale California.
Leon Dixon of the National Bicycle History Archive of America notes: "This is a very serious myth. First, Schwinn merely copied the Huffy Penguin, which existed before the Sting-Ray.