Francotte, A. FN-Browning, c1989:‏ ‎ pref., etc. (FN; arms factory est. 1889, Herstal) p. 47 (Fabrique nationale)

FN 1889-1989, 1989:‏ ‎ t.p. (FN) cover (Fabrique nationale Herstal)

Its website, 8 Dec. 2010:‏ homepage (FN Herstal) about us p. (FN Herstal is part of Herstal Group)

Wikipedia, 8 Dec. 2010:‏ ‎ under FN Herstal (Fabrique Nationale d'Herstal, self identified as FN Herstal and often referred to as Fabrique Nationale or simply FN, is a firearms manufacturer located in Herstal, Belgium. FN is a subsidiary of the Herstal Group)