Automatic spelling correction prior art?

To: Rob_MacLachlan@LISP-PMAX1.SLISP.CS.CMU.EDU
Subject: Automatic spelling correction prior art?
From: Richard Stallman <rms@gnu.ai.mit.edu>
Date: Fri, 17 Jan 92 16:33:25 -0500
In-reply-to: Rob_MacLachlan@lisp-pmax1.slisp.cs.cmu.edu's message of Fri, 17 Jan 92 16:17:22 EST <9201172117.AA09644@life.ai.mit.edu>

If you could send me a copy of that tech report, that could be helpful.