More to explore:
Henrietta Bookshelf w/Mod Podged fabric
by BeingBrook on Flickr
How to decoupage fabric onto shelves. - Mod Podge Rocks
Cover back of bookshelf with fabric
Very cool retro bookshelf.
Or the Back of a Bookshelf
sweet under-bed bookshelf
white bookshelf with painted backing...
DIY: Vintage Style Shelves - cover the back of an inexpensive bookshelf with fabric.