Small Camping Trailers - Is there a directory of junkyards across the country that deal with vintage and classic cars/cycles/campers?

Is there a directory of junkyards across the country that deal with vintage and classic cars/cycles/campers?

I am a photographer in the Southern Ohio area looking for options for a photo excursion.

I am sure there is but try this site it goes by zip code http://usedautopartsdealers.com