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Photographs (black & white) of Tulipa: some painted to show colour, two with added diagrammatical paintings of parts of the flower. Varieties: Tulipa anabilis, cuspidata, galatica, oculis solis, pulchella violacea and violaea,

82 (approx) photographs of varieties of Tulipa (black & white and one colour), single plants and some of petals, many annotated with details of dates, growth, treatment etc. on back. Varieties include: Tulipa amabilis, armens, cuspidata, erythronoides, fosteriana, holzeri, humilis, kolpakourskyana, lanata, oailis solis, persica, primulina, rhodopea, saxatilis, silvestris, shielded universe and wilsoniana.

A Lefeber (Holland) to AD Hall: tulip species in Haarlem (Holland), Russian tulips, T.ostrowskiana and kolpakowskiana

AD Cotton, Royal Botanic Gardens, Kew to AD Hall (& v.v): T. montana and wilsoniana

AD Hall and U.S.S.R: The jubilee of IV Michurin

AD Hall to Major A Pam: T. praecox, T. oculis-solis

AD Hall, Akenhead, NI Vavilov (Director of U.S.S.R Institute of Plant Industry, Leningrad): about NI Vavilov

AD Hall, FW Oliver and Sir John Russell: re the appointment of A Afifi and election to Royal Society of RA Fisher

AD Hall, Michael Cavendish, Havelock and Lord Parmoor: Agricultural Research Council: Development Fund, grants etc. and a copy of the royal charter establishing the Agricultural Research Council

Sir Alfred Daniel Hall: correspondence and research (mainly about Tulips): photographs, manuscripts and proof papers, notes, notebooks, correspondence, pressed petals, drawings and paintings.