The 1913 Indian 61 Twin made use of leaf springs for not only its front and rear wheels, but as a suspension for the rider's seat, too.
1913 Indian 61 Twin pictures
The 1913 Indian 61 Twin used cutting-edge technology for the era to ensure a smooth ride and efficient acceleration.
A small oil pump beneath the seat feeds more oil
The front suspension, like the rear suspension, made use of solidly anchored leaf springs.

