Remember VisiCalc? A Brief History of Spreadsheet Disruption - WSJ
Spreadsheet - Wikipedia
VisiCalc of Dan Bricklin and Bob Frankston Guide: History, Origin, and More - History-Computer
Microsoft Excel | Description & History | Britannica
The history of spreadsheets - Sheetgo Blog
Was VisiCalc the "first" spreadsheet?
The History of Spreadsheet Software
Was VisiCalc the "first" spreadsheet?
Living Computers: Museum + Labs - Happy Birthday to "The Father of the Spreadsheet" Dan Bricklin! His creation VisiCalc was one of the programs that illustrated the usefulness of early personal computers
How computing's first 'killer app' changed everything - BBC News
The history of spreadsheets - Sheetgo Blog
Introduction to Spreadsheets | Tutorial | UC Berkeley Advanced Media