The Stick and Cane in Close Combat by Tom Lang (covers locks, throws, and takedowns - little striking) Has some good info on if someone grabs you stick or you. You can see some of the info from the book at ejmas.com. You can get the book from Amazon.com which also has reviews. If you would like to read about the author see http://www.tomlangmartialarts.com/
Raising Cane - The Unexpected Martial Art by Octavio Ramos
Stick Fighting: Techniques of Self-Defense by Atsumi, Masaaki, Hatsumi, Masaaki, Chambers, Quentan. Review
Stick Fighting By Masaaki Hatsumi, Quintin Chambers You can see a copy on google books.
Advanced Stick Fighting by Masaaki Hatsumi You can see a copy online on google books.
Basic Stick Fighting for Combat (Special Forces/Ranger-Udt/Seal Hand-to-Hand Combat/Special Weapons/Special Tactics Series) by Michael D. Echanis. Review You can also see a copy on google books.
Hock Hochheim Stick Fighting Combat - Stick info designed for police officers and the armed forces. From what I've seen it is very practical and detailed.
Free online books and articles
Safeism dot com - Large collection of old (mainly WWII era) self-defense books in pdf.
The "Walking Stick" Method of Self Defense – by H.G. Lang PDF copy Here (Mr. H.G. Lang who was a British Officer of the Indian Police. It was written in 1923, and describes itself as a method of fighting that although is a scientific one does not require special training and can be practiced by men, women and children.)
The Cane as A Weapon by A C Cunningham 1912
PDF copy you can download Here or Here
Article about A C Cunningham and his system.
Martial History Magazine Article
Fairbairn’s Combative Stick Method – PDF copy William Ewart Fairbairn (1885–1960) was a British soldier, police officer, and exponent of hand-to-hand combat method, the Close combat, and allied special forces in World War II.
The Short End article shows some techniques that are very similar to Fairbairn. The same web page also has two other articles about his methods Fairbairn Stick Attack and The Fairbairn Umbrella Attack Drill . There is also some info about stick work in his book Get Though.
Self Defence with a cane E.W. Barton-Wright - 1901 part 1 and Part 2 or Part One - Part Two
The stick is king: The Shillelagh Bata or the rediscovery of a living Irish martial tradition By Maxime Chouinard, B.A.