I found this mixed in with some other items at an auction a couple of years ago. It is "The Superhero Catalogue" from 1977. It is basically a mail order catalogue from a store in New Jersey that is the exact same size and material of a regular comic book. Features mainly DC and Marvel items but there are 3 different Star Wars items advertised (there is actually more Howard the Duck items than Star Wars items in this). The 3 Star Wars items are a T-shirt, a calender and The Star Wars Blueprints. The Blueprints are only listed with no photo so I am not including a photo here. The cost of the blueprints was $6.95 plus S&H. Costs of other items are in the photos.
Also, before anyone asks: It is not for sale at this time.