You can find the document on the following Defense Logistics Agency "public
use" site (enter "100" as the document number):
You will need the free Adobe Acrobat Reader to view the document (download
it from Adobe website if you don't already have it).
FYI: MIL-STD-100 Was cancelled on 12-14-2001 as part of the Defense
Standardization Program. Revision "G" was the last version. The various
chapters and appendices therein were replaced by the following commercial
(ANSI/ASME) drawing standards; ASME Y-14.100 (ENGRG DWG Practices); ASME
Y-14.24 (Types & Applications of Drawings); ASME Y-14.34M (Associated
Lists); ASME Y-14.35M (Revision of Drawings)....
ASME doesn't provide free copies. Your local public library may have ASME
standards. However that may not help if your new employer has an existing
contract with MIL-STD-100 requirements.