W. Hamilton Gibson,
Camp Life in the Woods and the Tricks of Trapping and Trap Making
“ Although the foregoing varieties often serve to good purpose, the Steel Trap is the principal device used by professional trappers, and possesses great advantages over all other traps. It is portable, sets easily and quickly, either on land or beneath the water; can be concealed with ease; secures its victims without injury to their fur, and by the application of the spring or sliding pole (hereafter described) will most effectually prevent the captive from making his escape by self-amputation, besides placing him beyond the reach of destruction by other animals. ”
