Druce, George Claridge (1911). "New or noteworthy plants". The Gardeners' Chronicle. 3. Vol. 50. pp. 408–409. Retrieved 14 June 2016.
Rehder, Alfred (1949). "Ulmaceae". Bibliography of cultivated trees and shrubs hardy in the cooler temperate regions of the Northern Hemisphere. p. 143.
Melville, R. (1978). "On the discrimination of species in hybrid swarms with special reference to Ulmus and the nomenclature of U. minor (Mill.) and U. carpinifolia (Gled.)". Taxon. 27 (4): 345–351. doi:10.2307/1220370. JSTOR1220370.
Melville, R. (1978). "On the discrimination of species in hybrid swarms with special reference to Ulmus and the nomenclature of U. minor (Mill.) and U. carpinifolia (Gled.)". Taxon. 27 (4): 345–351. doi:10.2307/1220370. JSTOR1220370.
kew.org
apps.kew.org
Augustine Henry's hybrid Ulmus 'Mossii' was also present in Madingley Rd (Trees of Great Britain & Ireland, vol. 7, p.1865; Kew Herbarium specimen K000852679)
Richens, R. H. (1960). "Cambridgeshire elms"(PDF). Nature in Cambridgeshire. 3: 19. Retrieved 13 June 2016.
oreald.com
Photograph of a Hertfordshire Plot Elm for comparison ('The Backs', River Lea, Ware, Herts.) Hammerton, John Alexander (1925). Wonderful Britain. Vol. 2. The Fleetway House.
Photograph of an asymmetrical Hertfordshire elm, 'The Backs', River Lea, Ware, Herts. (from Hammerton, Wonderful Britain, 1920, vol.2): oreald.com [1]
