National Geographic Society
575 Wandsworth Road, London
Courtney Page
Belton House, Lincolnshire
National Rose Society
Frederick Vincent Theobald (1868-1930)
Cragside, Northumberland
National Geographic Society (U.S.). Cartographic Division
Shaw's Corner, Hertfordshire
Leonard Hollis
Irish National Foresters' Society
Royal National Rose Society
National Geographic Book Service
Greys Court, Oxfordshire
Church of England. Men's Society. National Conference
Hardwick Hall, Derbyshire
National Geographic Society (Washington, D.C.)
Tyntesfield, North Somerset
Lacock, Wiltshire
Lyme, Cheshire
National Geographic Society (U.S.)
Wightwick Manor, West Midlands
National Society for Promoting the Education of the Poor in the Principles of the Established Church (Great Britain)
Dunham Massey, Cheshire
Oxburgh Hall, Norfolk
Hughes, H. Harold 1864-1940. (Henry Harold)
Plas Newydd, Anglesey
Monk's House, Rodmell, East Sussex
Sissinghurst Castle Garden, Kent
Coleton Fishacre, Devon
Welsh National Agricultural Society
Erddig, Wrexham
Baddesley Clinton, Warwickshire
Hunters' Improvement and National Light Horse Breeding Society
Speke Hall, Merseyside
Rev. S. Clark
Calke Abbey, Derbyshire
Rowallane, County Down
National Bible Society of Scotland
National Geographic Magazine
George Massee (1850-1917)
Standen House and Garden, West Sussex
Bertram Lloyd
Soho Gallery Ltd
Llanerchaeron, Ceredigion
National Trust
Nymans Estate, West Sussex