To test how an album jacket would visually look proof sheets were generated to check how the image and colors would appear as the final product.  The above image is an example of a proof sheet for the release of Houses of the Holy for Columbia House.  The proof sheet is printed on a heavier paper stock, and you can see the small markings that let the printer know the exact placement of each image.

In addition, the outer edge of a proof sheet shows color bars which show the basic colors utilized for printing which are black, cyan, magenta, and yellow.  For an in depth write up of how the color bars are utilized please go here.

Proof sheets are rare and generally do not make it to the private collectors market.  They are eye appealing and make for great wall decorations.

Description by: Robert Musco

Photograph(s) by: Robert Musco

From the collection of: Robert Musco