 Although three maps on his person matched those missing from books he had just examined in the Beinecke, he protested his innocence.It was not until his court appearance a year later (June 22, 2006) that he confessed to having stolen a total of 97 maps from six institutions — Boston Public Library, Harvard University (Houghton Library), Newberry Library (in Chicago), New York Public Library (the Rare Book and Map Divisions), and Yale University (Beinecke Library and the Sterling Memorial Library) in the United States, as well as the British Library in London.At the time of his arrest, the British Library had already identified him as a suspect and was about to call in the police.