Catherine,

Mid to late ’60′s. Common usage after about ’75. I believe it originated in the military.

No officer would ever use it on a memo. It would be dispositive proof of failure to perform or at minimum to report undue influence. Wouldn’t look too hot in a court martial. “I knew it was wrong but I wrote this memo – see.”

At least that’s the way I see it. vnjagvet may be able to add a bit of clarity.