found: NUCMC data from Maine Hist. Society for Longfellow, S. Letter, Oct. 1888(letter to A. Longfellow about the family and the old home at Horsforth)
found: Grove vine, December 2016/January 2017:t.p. (Horsforth, Leeds)
found: Wikipedia. viewed 18 January 2018(Horsforth; suburb and civil parish within the City of Leeds metropolitan bourough in West Yorkshire, England; historically, it was part of the West Riding of Yorkshire and an agricultural community but it expanded rapidly during the age of industrialisation and by the later 19th century, was considered to be the largest village in the UK; it became part of the City of Leeds metropolitan borough in 1974)
found: BGN, May 18, 2005(Horsforth; PPL; 5350N; 00138W; UK00)
found: GeoNames, algorithmically matched, 2009(ppl; 53°50ʹ00ʺN 001°38ʹ00ʺW)
found: Collins Britain atlas and gazetteer, 1999(Horsforth, W.Yorks.; suburb, 4m/7km NW of Leeds)