In Season 8, there were good looks at the wall in Jack's office. At some point in the past I saw blow-ups of those via this post at Gateworld.

http://forum.gateworld.net/threads/1664-Exclusive-Jack-O-Neill-office-photo-gallery

Unfortunately, the photos themselves are gone from the posted link. From what I remember and what one of the commentator's indicated, on of the certificates was his diploma from the Air Force Academy. For what it's worth, I remember the other was a certificate for some kind of joint services special ops training.

The write up in this wiki sites episode references saying that Jack was born in 1952 and graduate in 1974

http://stargate-sg1-solutions.com/wiki/Jack_O%27Neill:_Stargate_Movie

However, it does point out there have been a few canon contradictions in that arena. That being said, I believe that 1969 corroborates the 1952 date -- talking about Jack being in high school in 1969.

Unfor

Thank you so much! I should have thought of the wiki -- that's exactly what I needed!