Meulemans, M.; Parmentier, C. (1983). Burdekin, D.A. (ed.). "Studies on Ceratocystis ulmi in Belgium"(PDF). Forestry Commission Bulletin (Research on Dutch Elm Disease in Europe) (60). London: HMSO: 86–95.
Photographs of young 'Dampieri' elm [1] and mature specimens [2] in Hoorn, Holland (Handbuch der Ulmengewächse, ulmen-handbuch.de/handbuch/ulmus/gattung_ulmus.html)
wikimedia.org
commons.wikimedia.org
Katalog(PDF). Vol. 108. Berlin, Germany: L. Späth Baumschulenweg. 1902–1903. pp. 132–133.
Accessions book. Royal Botanic Garden Edinburgh. 1902. pp. 45, 47.