Over the Rainbow: The Life and Rhymes of Yip Harburg by Stuart Stotts was released in paperback in September 2015 by Big Valley Press. It is also available as a Kindle book.

The Yip Harburg Songbook. Piano/vocal sheets to 34 songs including “Over the Rainbow,” “It’s Only a Paper Moon,” “April in Paris,” “Lydia, the Tattooed Lady,” “Brother, Can You Spare a Dime?” “Old Devil Moon,” and an illustrated introductory essay by Stephen Holden. Hal Leonard Publishers, 2009.

Who Put the Rainbow in The Wizard of Oz? Yip Harburg, Lyricist. by Harold Meyerson and Ernie Harburg. 454 pages, black-and-white and color illustrations. University of Michigan Press, 1993. Paperback edition, 1995.

Harriet Alonso. Yip Harburg: Legendary Lyricist and Human Rights Activist. Wesleyan University Press, 2012.  305 pages, with illustrations. This interview-based biography is, in the author’s words, “a study of the lyrical world of Yip Harburg, as told largely by Yip himself through interviews, speeches, song lyrics, and poems.”