9n Ford, Ford N Series Tractors (Originality Guide)
9n Ford, Vintage Ford Tractors, Vintage Ford Tractors : The Ultimate Tribute to Ford, Fordson, Ferguson, and New Holland Tractors (Town Square Books)
Amazon.com........the best
Ford Shop Manual Series 2N, 8N, 9N/Fo-4
Google
  Web http://www.9nford.com
9NFord.com Tractor Videos