The slide collection holds circa 60,000 botanically named slides. A collection of digital images is now being developed.
A stunning collection of original 19th century Indian botanical drawings is also housed in the Library.
Other collections of original art works which are either owned by RBGE or on permanent loan include botanical paintings by Lillian Snelling.
Teaching diagrams used by Regius Keepers John Hope and John Hutton Balfour.