I live in Topeka and go to Lincoln Ne and adopt from STaci at Capital City Rat Rescue. I beleive she has a couple of girls right now but she gets new rescues frequently. I go that way every once in awhile and would be willing to bring someone back from you if that ever works out.
I have adopted from Elisabeth also and they ahve been wonderful rats. We don't tend to be picky so we have adopted singles out that are only pet quality...which is what we want anyway...lol. She might still have some for that. Also sometimes she is busy busy and doesnt get back to her email very quickly. I think that is why she is either not breeding or cutting way back on breeding.
There is a rat at the Lawrence Humane society currently listed on Petfinder....they don't list a sex however...I had thought about looking at that one but certainly don't need another rat. (we have

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Good luck in your search.