The assertion that Irving Berlin's song IF YOU DON'T WANT MY PEACHES (YOU'D BETTER STOP SHAKING MY TREE) was not published during his lifetime appears to be mistaken.

Our venerable Levy collection has the sheet music, bearing a copyright date of 1914. Click here for the PDF file.

According to WorldCat.org, several other libraries also have copies: New York Public Library, University of Colorado at Boulder, Baylor University, and The Morgan Library & Museum. The NYPL also has online images, but the others don't.

All indications are that the song really was published in 1914.