They're all over Toronto as well; here we call them "little free libraries." Great finds in those boxes. I'd say over the past decade maybe 20% of what I've read I've found in these things.
Dark Entries (1964) by Robert Aickman. The author's earliest stories, not quite at the level of his later work, with the exception of “Ringing the Changes,” one of his very best.
Pushkin's Children (2003) by Tatyana Tolstaya. Essays and book reviews from 1990-2000 about Russian politics, history and culture at a time of great upheaval in that country. Tolstaya's witty and vicious, a little Gore Vidal-ish, especially when taking down Solzhenitsyn, who’s returned from America and bought himself two 15 minute chunks of TV time every month where he ''flies like an incorporeal spirit in a swirl of electrons through the indifferent ether, to beat against my television screen, begging to be let out with his moldy prophecies.'' Crazy detail: When Solzhenitsyn showed up in Vermont in 1974 (after having been expelled from the Soviet Union), Russian emigres tried to meet with him, and were rebuffed – because they were voluntary emigres (and therefore traitors), whereas Solzhenitsyn had been kicked out against his will. Fun guy!