Hi, Mary. Even though I do a lot for Citristrip and highly recommend their products, I think that Peel Away 6 would be the best choice for this. I believe that their web site is www.peelaway.com or you can check a search engine for more info.
The paint will no doubt have lead in it. This will really not be much of a concern during stripping but you really want to clean up well to be sure that there is nothing left that can become dust after it has dried.