Copyright law involves publishing and/or using material for commercial, not private use. For that reason should what he published be used for financial gain and he not being in control of it he could be in a grey area. Still, like the man said it is highly unlikely, the material having gone PD a long time ago. Speaking of music copyright gone from the sublime to ridiculous is the song Happy Birthday. Yes it IS copyright so a hired clown singing it at a birthday party is subject to prosecution. Pretty ridiculous, isn't it?