with a transparent glass cube built onto the structure; the glass cube holding an expanded lobby that included a shop and café. The design of the cube is reminiscent of the original proposal submitted by Moriyama in 1973. Several social spaces were built into the library during the renovations, including an event centre and the special collections rotunda. The revitalization efforts were led by Moriyama & Teshima Architects, the successor architectural firm to Raymond Moriyama Architects. Collection The Toronto Reference Library is the largest public reference library in Canada. Because it operates as a reference library, most items in its collections are non-circulating; with the public unable to borrow most of these items for use outside the library. However, the Toronto Reference Library's collections does include a small number of circulating books, DVDs, and musical scores that may be loaned for outside use to TPL members. In 2018, it saw a circulation of over 375,000. Items are largely split between the different levels of the building by discipline and subject. As of March 2016, the library has approximately 15,000 vinyls in its collection. Over of shelving is used to house the library's collection; with over 1.6 million items on its open shelves. In addition to its regular collection, the reference library also holds a number of special collections of the Toronto Public Library, many of which are held at the Marilyn & Charles Baillie Special Collections Centre on the building's fifth level, or the TD Gallery on the building's first level. Over 2 million items are stored in the Marilyn & Charles Bailie Special Collections Centre. The Baldwin Collection of Canadiana is a special collection of primary sources and materials on the history of pre-Confederation Canada. The collection was named after Robert Baldwin, leader of the Reform movement in Upper Canada during the mid-19th century. Rare book collections held at the library include the Arthur Conan Doyle collection. The items are held in a Victorian-esque room modelled after the study at 221B Baker Street, the home of Doyle's fictional character Sherlock Holmes. The basis of the collection was formed in 1969, after TPL purchased approximately 500 books from the estate of Toronto-based Arthur Vincent Baillie, 200 of which were books about Holmes. The collection has since expanded to include thousands of original manuscripts, photographs of Doyle, as well as translations of his works. The collection had since been supplemented by