Most interesting thing brought back from your travels: “A rare copy of an exhibition program for an exhibit by Franz Erhard Walther that I found at the Dia: Beacon bookstore. Sometimes we encounter an artist that isn’t well known enough to have a large presence on Google. Walther falls into this category, though it is getting better. There’s a large exhibition of his up at Dia: Beacon through February 13 that I emphatically recommend.”