The books I ended up bringing:
Terry Pratchett, The Wee Free Men and A Hat Full of Sky
Barbara Tuchman, Practicing History
I finished The Wee Free Men and started its sequel, but put that aside on the trip home in favor of Walter Farley's The Blood Bay Colt, which I got cheap at The Strand, and then a Dr. Who radio play. I didn't read any of the Tuchman at all.
I bought a Dalek alarm clock.