John Rylands Library assembled by George Spencer, 2nd Earl Spencer, which Mrs Rylands purchased from Lord Spencer in 1892. She had begun acquiring books in 1889 and continued to do so throughout her lifetime. After its inauguration on 6 October 1899 (the wedding anniversary of John Rylands and Enriqueta Tennant) the library opened to readers and visitors on 1 January 1900. The John Rylands Library and the library of the University of Manchester merged in July 1972 and was named the John Rylands University Library of Manchester. Special collections built up by both libraries were progressively concentrated in the Deansgate building. The building
John Rylands Library and the fact that the valuable manuscript collections were to be housed in "that dirty, uncomfortable city ... [with] not enough light to read by, and the books they already have are wretchedly kept" (written in 1901 about the Crawford MSS.) Mrs Rylands negotiated Deeds of Agreement with her neighbours to fix the heights of future adjacent buildings. The permissible height of the building was fixed at just over 34 feet, but it was suggested that it could be taller at the centre if there was an open area around the edges, at the height of buildings that had been