Henry Ford is generally credited with implementing the assembly line method for making cars but the historical truth is that a decade before Ford started up the line at the Highland Park Model T factory, Ransom Olds was putting cars together that way. Ford and his men, however, went a long way towards perfecting the assembly line. They first experimented building magnetos that way and once the concept was proven, it was expanded to assemble entire cars in 1913, reducing assembly time to a fraction of the time it took building cars with the former station assembly method. Model T enthusiasts tell me that the T in these Keystone-Mast stereograms is a 1914 model, which means these photos were shot very early in the Ford assembly line’s history.