Ahrens-Fox a Pictorial Tribute Book by John F. Sytsma published in 1971

Ahrens-Fox Album by John F. Sytsma (1973) Hard cover - very good

F.D.N.Y. Ahrens-Fox Apparatus

Sönke Ahrens' How to Take Smart Notes Paperback

Small Gasoline Engines by Ahrens, Donald L, Bear, Forrest W, Hoerner, Harry

Big Hero 6 Idea Lab (Disney STEAM Projects), Ahrens, Niki, Good Book

Hansen by Don Hansen and Chris Ahrens (2021, Trade Paperback)

100 Favorite Fire Rigs by John Sytsma 1977 Rare & Awesome