I have probably 300 old post magazines dating from the mid sixties back to the thirties. My father was a subscriber for years. I want to sell the magazines but do not know how to deternine the value of the magazines. The magazines that have a higher value should be sold as a whole magazine but could ads from the ones that have a lower value be cut out and sold. I would think there are some magazines with articles in them that would make that magazine very valuable. Is there a book I could buy to learn more about the value of the magazines ? I looked on Ebay and saw many Post Magazines for sale so there is a lot of competition out there. Thanks Norman