I saw a woman in her early 30s wearing surgical scrubs and reading The Jewel in the Crown, the first book in Paul Scott's Raj Quartet (basis of the beloved 1980s TV miniseries).
A Wall-Streeter in his 40s was reading Life, Keith Richards' autobiography, which received a VERY good review in the Times earlier this week.
A rotund little woman in her late 50s/early 60s sported a bowl-shaped haircut, bright red reading glasses, big clunky beads, and an NPR tote bag, and was reading Little Bee by Chris Cleave. I keep meaning to read this one, but . . . I don't know. I just haven't.