I would contact the magazine and ask them. You may be surprised at how generous they can be if you only ask. I did with a pattern that was free in the magazine and asked permission to use it for our programs at our guild. I was so happy that the magazine and the pattern designer said yes I could use it for teaching at our guild, with the stipulation it was not to be sold. They said they always appreciated it that someone thought to ask permission first, even thought the pattern was free at one time.