The Osler Library, a branch of the McGill University Library and part of ROAAr since 2016, is Canada's foremost scholarly resource for the history of medicine, and one of the most important libraries of its type in North America. It is located in the McIntyre Medical Sciences Building in Montreal. Collection The nucleus of the Library is the collection of 8,000 rare and historic works on the history of medicine and allied subjects presented to the Faculty of Medicine of McGill University by Sir William Osler (1849–1919). Sir William's original collection is described in the printed catalogue, Bibliotheca Osleriana, and information on the whole of the printed collection and much of the manuscript collections is listed in the McGill University online catalogue. Since the opening of the Library in 1929, the collection has continued to grow by purchase, gift, and transfer (particularly, in the latter case, of older health-related books from McGill's former Medical Library and Life Sciences Library.) In addition to the Osler Library's holdings of rare and old books, there is a strong circulating collection of current secondary works and modern editions of historic texts, as well as a reference collection, archives and manuscripts, portraits and artifacts. In particular, the Osler Library has a large collection of incunabula (over 150 volumes), an outstanding collection of editions of the works of Sir Thomas Browne (author of Religio Medici, the 17th-century classic), and a collection of some 30,000 19th-century French medical theses, primarily from Paris. The total number of works currently housed in the library is approximately 100,000, and includes books old and new, as well as "periodicals about the history of the health sciences and related areas". The library also includes an important archival collection, both in scope (more than 200 archival fonds) and in content, documenting the history and the development of medicine and its teaching from the 19th century. History Percy Erskine Nobbs designed the Osler library for the Strathcona Medical Building (now the Strathcona Anatomy and Dentistry Building), and the library officially opened there in May 1929. In 1965, both the contents of the library and the interior oak paneling and shelving were moved to their present location within the newly built McIntyre Medical Sciences Building. At that time the "Wellcome Camera" was added to the library with the financial assistance of the Wellcome Trust. Initially most of the windows on the first floor of the