I'm afraid that I'm still only dipping my toe into the world of f/f published fiction, but here's some decent goodreads lists that I've been working off of, less because I trust GR recs and more because it's nice to have recs in one place.

https://www.goodreads.com/list/show/108614.Regency_Victorian_and_Edwardian_WLW
https://www.goodreads.com/list/show/4541.Best_Lesbian_Fiction

And Lesbrary is decent for reviews, and has a tag for historical fiction:
http://lesbrary.com/tag/historical-fiction/