Pretty shameless suggestion here, but my story, Connections, is about Alt Clark finding Alt Lois. However HG Wells isn't in it and only a very small part of it is set in the Congo, although that's also the case for most of the stories suggested in the previous posts.
Georgia Walden's 'Nemisis' looks at Lois's experience in the Congo, but I don't think HG was in it. I recall a story called 'Desperately Seeking Lois' about alt Clark going to the Congo and finding Lois working in a school there, but I can't find it in the fanfic archive. Maybe I've got the title wrong and somebody else will remember it.
I'm assuming here, when you ask for an epilogue, that you're interested specifically in stories about the alt universe that we saw in S3 & 4 and not in other-alt universe stories. If that's the case, not all the stories suggested in the previous posts fit what you want, although they are all very enjoyable fanfics.
Carol
