Edward S. Ellis, The Huge Hunter, or the Steam Man of the Prairies… (1868)
“ By suspending the machine so that its feet were clear of the floor, Johnny Brainerd ascertained that under favorable circumstances it could run very nearly sixty miles an hour. It could easily do that, and draw a car connected to it on the railroad, while on a common road it could make thirty miles, the highest rate at which he believed it possible for a wagon to be drawn upon land with any degree of safety.It was the boy's intention to run at twenty miles an hour, while where everything was safe, he would demonstrate the power of the invention by occasionally making nearly double that. ”
