When Woody Guthrie was singing hillbilly songs on a little Los Angeles radio station in the late 1930s he used to mail out a small mimeographed songbook to listeners who wanted the words to his songs. On the bottom of one page appeared the following: This song is Copyrighted in U.S., under Seal of Copyright #154085, for a period of 28 years, and anybody caught singin' it without our permission, will be mighty good friends of our'n, cause we don't give a dern. Publish it. Write it. Sing it. Swing to it. Yodel it. We wrote it, that's all we wanted to do - Pete Seeger, on Woody, June 67