Hi Cat Woman,
I have a friend who is a "foster" home for new Mama cats and their kittens. She really enjoy's it. This isn't the place that she deals with but maybe this site can help you with some of what your looking for.
I'm sure if you call some places in your area that provide this service, they'd be happy to help you. Also search on Google for "animal shelter "foster" and you'll find a lot more places to see what they do. If you use the quotations, you'll find more of what you're after.