a place for zinesters - writers and readers
I think that if you are worried you should check out the laws on your books for the statute of limitations on those sort of offenses.
There is a little info on Wiki: http://en.wikipedia.org/wiki/Statute_of_limitations
But you'd probably want to check as close to your locality as possible.
Nate Gangelhoff writes about stuff like that in his Pick Your Poison zines and as far as I know, he never got in trouble (he did at the time of the crimes, though)-- but this was at least several years after the events had happened.
My guess is that you are probably fine, as you aren't making many copies. But if you get in trouble again and the writing comes to the attention of whomever is doing the prosecution, they could possibly use it against you.