diff --git a/BookChapters/README.md b/BookChapters/README.md
index f474448458e18eb7239ef7ee2eb04d446d4fd4ae..12fb1efe251e6a32d8a418eb374eac3335474b96 100644
--- a/BookChapters/README.md
+++ b/BookChapters/README.md
@@ -7,6 +7,6 @@ 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 'scan' subdirectory.  Updated versions in this directory have been
-produced using Optical Character Recognition (OCR) via Adobe Acrobat 11
-in order to facilitate search.
+the [scan](scan) 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.