Seeking items from Den's Collectors Den (1980s)
 

I'm researching Denny Eckes—the co-author of several early baseball card pricing guides along with Dr. James Beckett. His store/company, "Den's Collectors Den", in Laurel, Maryland, also issued reprints of classic cards like the Diamond Stars set in 1981.

I'm hoping to find someone who might have some business cards, catalogs, or other promotional material from Den's Collectors Den that they'd be willing to sell. Any help would be much appreciated.