There is a Squeak-based faithful recreation of Sketchpad at around 12:30 in Alan Kay's talk here: http://amturing.acm.org/acm_tcc_webcasts.cfm http://amturing.a

There is a Squeak-based faithful recreation of Sketchpad at around 12:30 in Alan Kay's talk here: http://amturing.acm.org/acm_tcc_webcasts.cfm http://amturing.acm.org/acm_tcc_webcasts.cfm.