Technical Analysis of Stock Trends, Edwards and Magee, Oldtime classic on TA.
Technical Analysis Explained : The Successful Investor's Guide to Spotting Investment Trends and Turning Points, Martin Pring. Theory and practice,more geared to investor who wants to apply TA
Technical Analysis from A to Z : Covers Every Trading Tool...from the Absolute Breadth Index to the Zig Zag, Steven Achelis. Small Encyclopedia
Trading for a Living, ALex Elder. TA and psychology, essential book by a shrink cum trader.
Thomas Bukowski, Encyclopedia of Chart Patterns.
"Japanese Candlestick Charting Methods", Steve Nison.
Dynamic Trading: Dynamic Concepts In Time, Price and Pattern Analysis With Practical Strategies For Traders and Investors by Robert C. Miner
This last one I have not read but plan to, but he has a great software program. Covers Fibonacci,Gann,and Elliot wave.
And last but not least:
"Why Hot Sexy Women Crave Stocks, Options, and Futures Traders", Dr
Jimmy James, Ph.d.
You will find many others (if you don't waste too much time tracking down the last one)
Also, go to Hardrightedge.com and visit the resources section,its loaded with different ta stuff.