First-Hand:A Brief Account of Spell Checking as Developed by Houghton Mifflin Company: Revision history

From ETHW

Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.

12 January 2015

22 July 2014

12 May 2014

16 July 2010

25 June 2010