Hollingshead also went on to point out that current copyright law in Canada is in an unstable state of flux, with new legislation on the horizon that could actually be detrimental to writers. (goodereader.com)
AAAS also released a statement in 1997 on intellectual property protection for databases independent of current copyright law. (aaas.org)
His body of work would presumably fall under current copyright laws internationally, e.g. Berne Convention, etc. since all his compositions were published in the 20th Century.) (law.stackexchange.com)