Resources

I have used a large number of resources in compiling this site.  I cannot guarantee that the list will ever be complete, but it will contain a large majority of the sources that I have used, and certainly the most frequently-used sources.

Bibliography

John Emms, Play the Open Games as Black (Gambit, 2000).
Karsten Muller and Martin Voigt, Danish Dynamite (Russell Enterprises 2003). 
Jude Acers and George Laven, The Italian Gambit and a Guiding Repertoire for White- E4! (Trafford Publishing 2006). 
Christoph Scheerer, 2011, Blackmar-Diemer Gambit (Everyman Chess, 2011). 
Kaissiber magazine (maintained by Stefan Bücker).
Stefan Bücker, 1988, Englund Gambit- Drei Gambits in Einem. 
Marc Esserman, Mayhem in the Morra (Quality Chess 2013)
John Shaw, The King's Gambit (Quality Chess 2013)

ChessCafe.com columns

The Kibitzer by Tim Harding:  http://www.chesscafe.com/archives/archives.htm#The Kibitzer
Over the Horizons by Stefan Bücker: http://www.chesscafe.com/archives/pastarch.htm#Over the Horizons
Opening Lanes by Gary Lane: http://www.chesscafe.com/archives/archives.htm#Opening Lanes
The Gambit Cartel by Tim McGrew: http://www.chesscafe.com/archives/pastarch.htm#The Gambit Cartel
The Openings Explained by Abby Marshall:  http://www.chesscafe.com/archives/archives.htm#The Openings Explained

Other web sources

Hard Chess by Mark Morss: http://www.correspondencechess.com/campbell/hard/hard.htm
The Urusov Gambit by Michael Goeller: http://www.rci.rutgers.edu/~goeller/urusov/perreux/index.html
The Kenilworthian: http://kenilworthian.blogspot.co.uk/
Chesspublishing.com forums: http://www.chesspub.com/cgi-bin/yabb2/YaBB.pl
John Watson’s book reviews at The Week In Chess: http://www.theweekinchess.com/john-watson-reviews