Now where do I place those images?

So who ya gonna call? OK which stock library ya gonna call? It's a perennial question for people looking beyond the most obvious candidates online.

Looking for credit lines in the media is one obvious place to start, find a library that has credit lines for works in the same areas that you can supply, that's a start.
Otherwise it's looking at the search facilities for members of the stock library trade bodies.

In the UK, that's BAPLA. and they have an A-Z search by name but maybe more useful is their category search.
http://www.bapla.org.uk/index.php?option=com_content&task=view&id=15&Itemid=44

In the US, it's PACA http://www.pacaoffice.org/ and the membership directory can be searched by category or name.

In Europe it's CEPIC who represent the trade associations http://www.cepic.org/directory so you can link to the association and search via them.

Getting the right images to the right libraries is an important part of the stock business.