You could go to The Barrow Downs
http://forum.barrowdowns.com/ and do a search. They get pretty into it all.
Micheal Martinez has great essays about all kind of stuff, he wrote Parma Endorion,
http://www.michael-martinez.com/book..._endorion.html
Visualizing Middle-earth,
and others at
http://www.merp.com/essays/MichaelMartinez/
more here.....
http://www.sf-fandom.com/site_map.html