Here are other resources that I'm tracking:

http://www.sal.ksu.edu/faculty/tim/ossg/index.html

http://joelgompert.com/OS/

http://www.csi.ucd.ie/staff/jcarthy/home/alp/alp-05.pdf

http://www.superfrink.net/athenaeum/

http://www.cs.utah.edu/flux/oskit/html/oskit-www.html

http://duartes.org/gustavo/blog/post/how-computers-boot-up/

http://duartes.org/gustavo/blog/post/kernel-boot-process/

http://www.ibm.com/developerworks/library/l-linuxboot/index....

http://www.osdever.net/bkerndev/Docs/title.htm

http://sourceforge.net/p/oszur11/code/ci/master/tree/

http://www.codeproject.com/Articles/737545/Writing-a-bit-dum...

http://freevideolectures.com/Course/2653/CSE-30341-Operating...