Last week in the mail, someone returned a copy of Le bol de chine; ou, Divagations sur les beaux arts by Pierre Mille, shown in the pictures below. There was no return address and no note. All we know is that it went missing sometime between February of 1938, when we purchased it for $2.50 ($43.39 in today’s money), and the 1990’s when the library added barcodes to our books. The checkout card was still in it so it was never checked out. Where it has been for the last 25+ years is a mystery and why it came home now is an even greater mystery.