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diff --git a/chapters/README.md b/chapters/README.md
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+## Book Chapters, Hamming Learning to Learn
+
+These chapters match the final copy (with proofreading markups) sent to the
+publishing company prior to publication.  The publisher applied proper book
+layouts and also replaced hand-drawn line art with matching figures that were
+produced by a professional artist.
+
+Dr. Hamming gave permission for these chapters to get scanned and shared for
+students taking the course who needed the book.  The original versions are in
+the [scans](./scans/) subdirectory.  Updated versions in this directory have been
+produced using [Optical Character Recognition (OCR)](https://en.wikipedia.org/wiki/Optical_character_recognition) 
+via Adobe Acrobat 11 in order to facilitate search.
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