Finding souvenir front page newspapers?

I have a friend who is a volunteer at her local library. While sorting through book donations, she came across some front page newspapers she thought may be valuable. Most were wrapped in plastic and we think they came from a catalog and are not worth very much. I recalled seeing them in gift catalogs, but I cannot seem to locate them online. I tried Wireless and Signals but not luck. Does anyone out in Yahoo Answerland recall where we can look to verify this information? We are hoping to sell them at our next book sale, but we want to price them fairly. Thanks