host: from jim heinz, how collectible are campaign posters, is there a decent market for resale and which poster has sold the most? guest: i think i don't know as much about resale. as we were doing this book, we were looking a lot on line to see what posters were popular and there seems to be a market for campaign memorabilia, of what the actual sale price of them, how saleable they are, i couldn't answer that. host: this is from 2000. rocks the rock garden. this is one of the posters you might see at college promoting an upcoming event. guest: it's almost like a rock 'n' roll poster like eddie vetter or on the bill there, it's -- i think it really speaks to the position that the nader campaign was in. very much a grassroots campaign, not a lot of money to spend on posters and artwork. >> this is from 2008, we talked about the famous hope poster which, by the way, the president talked about last thursday when he was at george clooney's house, where that came about. and this is another version of the change we can believe in with obama and biden, 2008. guest: i really like the hope poster