Referencing

I've been gathering references from bike shops and internet search engines about frame building and what not. Here is a list of what I have now, I will continually update this list via a blogpost edit:

Obviously:
http://www.sheldonbrown.com/

Materials:
http://www.bikeschool.com/store/index.cgi?id=857691512495&d=single&item_id=KA-019&c=Steel_Tubing&sc=4130_Standard&tc=
http://www.cycle-frames.com/bicycle-frame-tubing/
http://www.henryjames.com/
http://www.columbustubi.com/eng/3_3.htm
http://sfcyclotouring.blogspot.com/2006/07/about-steel-tubing-used-in-bike-frames.html
http://specialtymetalscorp.rtrk.com/?scid=1708239&rl_alt=http%253A%252F%252Fwww.specialtymetalscorp.com&rl_path=/index.php%3Foption%3Dcom_content%26view%3Darticle%26id%3D25%26Itemid%3D53

Methods:
http://blogs.phred.org/blogs/alex_wetmore/default.aspx
http://www.alteredcycles.com/

Computer Programs:
http://www.bikeforest.com/CAD/index.php# (free frame building program)

Way more to come - but I gotta run!