A bit of seasonal humor, from the archives of The Toast:  The Passive-Aggressive Guide to Book Gifting.  As always, read the comments, too; The Toast is one of the few sites on the net where doing so adds value to the experience, rather than making the reader despair of humanity.

Also, a research source:  The New York Public Library has put up a collection of digitized theatrical ephemera.  That hyperlink goes to an article about the collection; the actual archive is here.  They’ve got all sorts of stuff: programs, posters, correspondence, photos.