Principal resource
http://cartridgecollectors.org/headstampcodes.htm
Alternative sources
http://www.dia.mil/publicaffairs/Foia/smcal_vol1.pdf (10mb download. HT to delloro for updated link.)
http://www.bordingl.com/zfondelli.htm (Non English)
http://cartridgecollectors.org/headstampcodes.htm
Alternative sources
http://www.dia.mil/publicaffairs/Foia/smcal_vol1.pdf (10mb download. HT to delloro for updated link.)
http://www.bordingl.com/zfondelli.htm (Non English)