I'm looking for a poster.  It is an "I love NY" poster with a Rolls
Royce parked at the curb and a homeless person sleeping in a trashcan
right beside it.  I think the poster was by Gelt inc.1981.  How do I
find a picture of this poster or find one to purchase?

Hi, I recommend you chec the site as follows:

http://www.allposters.com/

I bought several types of beautiful photo posters of New York City
scenes.
I'm not sure if this company has the photo poster which you need,
however, they sell a lot of sorts.

Good Luck from Tokyo. :-)

I was looking around and i saw one like that at loblows.