John Rylands Library has been extended four times, the first time to designs by Champneys in 1920 after the project was delayed by World War I. The Lady Wolfson Building opened in 1962 on the west side and a third extension, south of the first was built in 1969. In January 2003, an appeal to renovate the building was launched. Funds were generated from grants from the University of Manchester and Heritage Lottery Fund and donations from members of the public and companies in Manchester. The project, Unlocking the Rylands, demolished the third extension, refurbished parts of the old building and erected a
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