Timeline accompanying the article “Inventing the Lisa User Interface,” from Interactions, issue 2/1997, pp. 49.

		October 78	Lisa Proposal
		spring 79	Lisa project begins
		May 79	Jef Raskin proposes project code named Macintosh
		July 79	Rod starts at Apple
		August 79	First Lisa application prototyped on Apple II
		September 79	Macintosh project begins
		October 79	First Lisa hardware with Bit-Sliced processor
		December 79	First visit to Xerox PARC
		February 80	First Lisa hardware with 68000
		April 80	Lisa Marketing Requirements Document published
		July 80	Larry Tesler starts at Apple; Personal apps Marketing Requirements Document
		August 80	Button wars
		September 80	Lisa user interface standards published
		November 80	Dan & Frank start at Apple; National Computer Conference (original proposed introduction date)
		January 81	Steve Jobs joins Macintosh Group
		February 81	Graphics editor; Engineering Requirements Specification
		August 81	IBM PC announced
		October 81	Xerox Star announced; User Interface Council started
		January 82	“Dialog Filer” recipes
		February 82	First Cut & Paste between applications
		March 82	Icon Filer proposal; Jef Raskin resigns from Apple
		July 82	First internal Icon Filer release
		January 83	Lisa announced
		June 83	Lisa ships
		January 84	Macintosh announced