The TIMIT corpus is described at:
http://www.ldc.upenn.edu/readme_files/timit.readme.html
For those of you who were interested in the spelling errors
which I found on the original TIMIT CD in the /doc/prompts.txt
file, they appear to have been cleared up completely in the
NTIMIT version of the CD-ROM (which holds the same data):
http://www.ldc.upenn.edu/readme_files/ntimit/prompts.txt
Sincerely,
:James Salsman