The HES Suicide Note - Was It Written in 1969?

If it was written in 1969, why didn't they deliver it to his family back then? Now it could be because it was a farewell note, and since HES didn't die in that year, the note was never sent. I'd also like to know what the transfer method was. Even a casual visual inspection would reveal if it just involved some kind of ink or graphite transfer,. There wouldn't be indentations in the paper from the pen or pencil used.