20th Century Typewriting, c. 1967
by D.D. Lessenberry, T. James Crawford, & Lawrence W. Erickson
REFERENCE GUIDE (pages i-xii)
https://docs.google.com/file/d/0B4HzDXtW3Sj2U0JEVnRUcTBtU2s/edit?usp=sharing
(this link directs to the 12-page reference guide located in the back of this book)

Again, please peruse the table of contents: http://typewriter.boardhost.com/viewtopic.php?pid=674#p674 and let me know if there is anything you'd like me to scan.

Enjoy!