M1 Care & Maintenance  http://ugca.org/08jan/clean/clean.htm
 U. S. Rifle Caliber .30 M1  http://usriflecal30m1.com
M1 Drawing Numbers & Mfg. Dates for Small Parts  http://myplace.frontier.com/~aleccorapinski/id14.html
 Bolt Heat Lot Numbers  http://myplace.frontier.com/~aleccorapinski/id12.html