The SwordMaster's Library

Here are some book recommendations, and links to online historical material.

Dueling

Dueling Central - "a comprehensive guide and web directory to pistol and sword dueling in history, literature and film."
The Duel, by Robert Baldick. An ancedotal analysis of the duel throughout history, covering all countries and time periods.
Secret History of the Sword - a book by Christopher Amberger.

Life in Elizabethan England: A Compendium of Common Knowledge
Le Poulet Gauche - "a guide to the history, culture, and daily life of 16th century France. It is designed to be a resource for historical recreation"
Methods and Practice of Elizabethan Swordplay, by Craig Turner, Tony Soper, Joseph Papp. A good starting point for getting a sense of the atmosphere & style of Elizabethan fencing methods. A concise summary of diGrassi, with many interesting historical tidbits hidden in the endnotes.
The Gunpowder Plot pages - A study of Guy Fawkes Day, with information about the period. The information on the Elizabethan Trained Bands is of particular interest.
Tudor & Elizabethan portraits

On Killing: The Psychological Cost of Learning to Kill in War and Society, by Dave Grossman.

The Inner Game of Fencing: Excellence in Form, Technique, Strategy and Spirit, by Nick Evangelista. Written by a master of Classical Fencing, it is in effect, a collection of fun-to-read essays discussing the mental approach to fencing, including ideas on morale and strategy.

Project Gutenberg. Online archive of out-of-print books.
Shakespeare Bookshelf. Complete works of William Shakespeare, on-line and searchable.
The Plays of Thomas Middleton 1580 - 1627. Including the infamous Roaring Girl
FireBlade Coffeehouse: Alexandre Dumas. Dumas's musketeer texts, with bibliographical discussion and other Dumas links.
Cyrano de Bergerac. A fairly comprehensive site dedicated to the inspiring Cyrano de Bergerac
Legends. offering "Guided access to primary source material and up-to-date scholarship", "Personal essays and extended reviews", "Historical surveys and thoughtful commentary", and "Romance, adventure, and panache". Of particular interest is the section on Swashbucklers & Fops.
The Scarlet Pimpernel, by Baroness Orczy. Did you know there are a whole series of Pimpernel books? A bit wordy, and gushy by today's standards, this books are filled with cunning plots, high romance, and foppish fun!
Raphael Sabatini is a writer from the early part of this century, sometimes called the "King of Swashbucklers." He is the author of Captain Blood, Scaramouche, and The Sea-hawk. My current favorite is Bardelys the Magnificent, which can be found at Project Gutenberg.

The Elizabethan Review - Being a scholarly journal devoted to publishing new research on Shakespeare and the English Renaissance.

Powell's Books - My favorite source for used and out-of-print books. Usually quite decently priced. They also sell new books at the retail list price.
Amazon.com - For new books, I like amazon.com, since they are usually discounted. Also, the selection is broad and the reviews are very handy.