Actually, there is an LJ community for crowd-sourcing that kind of thing. I've made use of it in the past for Deadwood-fic, sometimes read it for entertainment, and will likely be referring to it on this project.

First up - can my white-girl main character refer to a lesbian as a "bulldagger," or should she stick to the period-but-less-colourful-sounding "dyke?" She is pretty bohemian and may well have visited Harlem on occasion.