Miniature Engineering Museum:
Original Springfield A1 Single Cylinder, Two Cycle by Roy E. McAdams, Springfield OH, 1919
Miniature Engineering Museum:
Springfield A1 Model Airplane Engine Built by Roy E. McAdams, Springfield Motor Works, Springfield OH, 1931-1934
Miniature Engineering Museum:
Springfield W1 Model Boat Engine Built by Roy E. McAdams, mid 1920s
Miniature Engineering Museum:
Springfield A1 Model Airplane Engine, 1925
Miniature Engineering Museum:
Springfield A2 Cylinder Airplane Engine by Roy E. McAdams, Springfield OH, 1929
Miniature Engineering Museum:
Springfield W2, Two Cylinder Boat Engine by Roy E. Mcadams, Springfield OH, circa 1920s
Miniature Engineering Museum:
Springfield A5 Radial Engine by Roy McAdams, OH, 1930
Miniature Engineering Museum:
Springfield A5 Radial Aircraft Engine for Model Airplanes by Roy McAdams, 1930
Miniature Engineering Museum:
Springfield A5 Radial Engine Running in 1930
Miniature Engineering Museum:
Springfield A2 Opposed Airplane Engine by Roy McAdams 1920's
Miniature Engineering Museum:
5 Cylinder Radial Engine by Roy McAdams, OH, 1930 (rear quarter view)
Miniature Engineering Museum:
Springfield W2, Two Cylinder Boat Engine by Roy E. Mcadams, Springfield OH, circa 1920s
Miniature Engineering Museum:
Springfield A1 Miniature Half-Scale 1.64cc Airplane Engine by Roy McAdams, OH, circa 1925
Miniature Engineering Museum:
Springfield A1 Miniature Half-Scale 1.64cc Airplane Engine by Roy McAdams, OH, circa 1925
Miniature Engineering Museum:
1930 Springfield A5 by Roy McAdams, OH
Miniature Engineering Museum:
Springfield A5 by Roy McAdams , 1930
Miniature Engineering Museum:
Springfield Model Engines, Springfield Motor Works, OH, circa 1920-1930
Miniature Engineering Museum:
Springfield A1 Built by Roy McAdams, Springfield OH, circa 1925
Miniature Engineering Museum:
Springfield Model Works Bulliten 37, A1 Single Cylinder Two Cycle Engine, Mid 1920's
Miniature Engineering Museum:
Springfield Model Works bulletin 38 Twin Cylinder Horizontally Opposed, circa late 1920's
Miniature Engineering Museum:
Springfield A1 Built From a Kit, Builder Unknown, Date Unknown
Miniature Engineering Museum:
Springfield A1 Built From 1919 Casting Kit, Builder Unknown, Date Unknown
Miniature Engineering Museum:
Springfield A1 Built From 1919 Casting Kit, Builder Unknown, Date Unknown