How can I research the origins of a late18th century political cartoon
wherein the subject is Frfederick Douglass? It is dated about1863. Is
in fine condition and I am so curious to know it's context and about
the artist who drew it. I'm sure it has something to do with the great
arguments regarding slavery and abolitionists. Headline over the page
is "Life In Philadelphia."I will have artists info by monday.  Any
advice on where to start?

A good starting place would be this excellent site that specializes in
the history of 19th century political cartoons, and also has a wealth
of information about Frederick Douglass himself:

http://www.boondocksnet.com/cartoons/

A site search for Frederick Douglass turns up a good deal of
information, and once you have the cartoonist's name, you can search
for it as well.  Also note that there is a discussion Forum at the
site where anyone can post a question for other Forum users to see
and, possibly, respond to.

Good luck.  Post a Request for Clarification if anything I've written
here needs additional explanation or information.