Book recs?

Specifically Regency romances, which I appear to be in the mood for. I recently read Carla Kelly's Summer Campaign, which I enjoyed, but then picked up another of hers, Mrs. Drew Plays Her Hand, in which I am totally bogging down, and I think it's because of the ahistoricity.

*waits for people to stop laughing*

Yeah, yeah, I know they're all terribly not historically accurate, but the easy intimacy and informality between the hero and heroine is so incredibly modern that it's throwing me out of the book hardcore. (Well, it kind of exists in Summer Campaign as well, but there they had an excuse for it!)

Anyway. Suggestions? Preferably ones available in ebook format as I guard what precious little shelf space we have jealously and don't really want to fill it with books I'll only read once. :)

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Via Metafilter: All Our Worlds: Diverse Fantastic Fiction Database of SF/F books with elements of diversity, tagged and searchable.

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Can you think of SF/F authors or characters who are/were CPAs? (Crossword puzzle clue. The puzzle I'm making, that is.)