Collectors Bulletin Board

I have a double sided presentation (not sure if it's inhouse or for outside sales) from 1956 for the IBM ramac 305 computer. On the internet I have tried to find any collectors of computer related materials, or newsgroups, bulletin boards, or anything to find out about this. I have sent 2 emails to IBM to see if I could get any information on exactly what it might be or what it was created for. It's been several moths and still have received no response. I was wondering if you might have any leads or know where I can find any information on people that collect this type of thing. To get a better idea of what I'm asking, you can view some pictures of it at http://www.nvunot.com/ibm/ I know this may be a strange request for your organization but I have exhausted all other ideas on how to obtain any information. Any help you may provide would be greatly appeciated. Steven Hefner