Tangled in Time: Includes: Project Enterprise: The Short Stories: Volume 3 by Pauline Baird Jones

Colonel Carey (from The Key and Girl Gone Nova) takes a test "flight" through the Garradian time-space portal, but an unexpected impact lands him somewhere and some when. As he attempts to get to Area 51, he crosses paths with Miss Olivia Carstairs, who could be Mary Poppins' twin sister. Or maybe her cousin. Olivia's got a transmogrification machine powered by steam and a mouth he'd like to kiss like it was his job. Can he convince her to join forces before she shoots him with her derringer?