John Rylands Library Lord Spencer regarded as one of the finest library collections in private ownership with 43,000 items - 3,000 of which originate from before 1501 (i.e. incunabula). Mrs Rylands paid £210,000 for Spencer's collection which included the Aldine Collection and an incunabula collection of 3,000 items. Owens College Library received Richard Copley Christie's library of over 8,000 volumes including many rare books from the Renaissance period in 1901. It was part of the Victoria University of Manchester library from 1904 and was transferred to the John Rylands Library building after the merger in 1972. In 1901, Mrs Rylands paid £155,000 for
John Rylands Library prevent the air being 'fouled by the opening of the outer doors' with internal swing doors between the circulation areas and the main library to 'preserve the valuable books from injury'. By 1900 the ventilation system had evolved to include electric fans to draw in air at pavement level through coke screens sprayed with water. On opening in 1900, the library had 70,000 books and fewer than 100 manuscripts and by 2012, more than 250,000 printed volumes and over one million manuscripts and archival items. The main foundation of the library's collections acquired in 1892 was the "Althorp Library" of