| Many collectors or museums have duplicates and would like to trade them for other posters that they don't have. If you have something to offer and are interested in trading, please and I put you on the list below, maybe somebody can help you and is in the same situation. Listing is free, until further notice, and I decline all responsibility. |
| Date | Who | What | How many | Contact | Details |
| 2004.09.17 | Timothy Smith | Has Weingart posters | ? | t.smith@worldformat.com | Looking for Armin Hofmann and Emil Ruder posters |
| 2004.06.18 | Donald S. Mayer | original polish posters | ? | art@contemporaryposters.com | www.contemporaryposters.com |
| 2004.06.18 | William Crouse | art deco posters from 1920-1939 | 50 | bill@wwcrouse.com | ? |
| 2003.06.08 | Dan Walsh | palestinian and zionist posters | 700 | info@liberationgraphics.com | www.liberationgraphics.com/ppp/index.html |