I've been trying to get copyrights reverted for my grandmother's works. It's 95 years after the work was created. She passed in the 1990s and yet most still will, without intervention, be copyrighted for decades to come. (US)

Have you made any progress?

why won't you publish her work and put the burden of taking legal action on them (whoever they are) ? I bet they won't bother (IANAL)