In April 2017, the Carnegie Library of Pittsburgh made a shocking discovery in the course of a routine insurance appraisal of its rare book holdings in the library’s main Oakland branch: some 314 rare books, folios, maps and plates were missing. News of the thefts was finally made public last month: see coverage from CBS Pittsburgh, Hyperallergic, Library Journal, Pittsburgh Post-Gazette, Pittsburgh Tribune-Review and Smithsonian magazine, among others. The police do have suspects in the thefts, which had apparently taken place over a long period of time; the total value of the stolen items is around $5 million. A full list of the stolen items (PDF) has been posted, and includes maps by Hondius, Jefferys, Ogilby and Ortelius, as well as two copies of the Italian translation of Ptolemy’s Geography. Make no mistake: as thefts of rare maps and books go, this is a staggeringly large incident. [Tony Campbell]