generated at
The Early History Of Smalltalk pdf
from Smalltalk
The Early History Of Smalltalk pdf
誕生の経緯
https://swikis.ddo.jp/abee/74
http://worrydream.com/EarlyHistoryOfSmalltalk/
http://mnielsen.github.io/notes/kay/Personal_Computing_1975.pdf
教えてもらった