Three SRI International mouse pads personally gifted by computer visionary Douglas Engelbart to his friend and colleague, Bill Daul, who was a member of Engelbart's pioneering research team at SRI. Engelbart is remembered for founding the field of human-computer interaction and for his development of the computer mouse. Each mouse pad, 9.25 x 7.75, features an image of the first computer mouse, a background image of Engelbart using the mouse with a computer setup, and white text: “The computer mouse was invented at SRI by Doug Engelbart in the early 1960s, and the first prototype was built by Bill English (seen below) in 1964.” In overall fine condition.