(Anonymous) 2013-09-09 02:26 pm (UTC)(link)
US copyrights:
As a general rule, for works created after January 1, 1978, copyright protection lasts for the life of the author plus an additional 70 years. For an anonymous work, a pseudonymous work, or a work made for hire, the copyright endures for a term of 95 years from the year of its first publication or a term of 120 years from the year of its creation, whichever expires first.


So actually you don't but your family can keep renewing the copyright.

(Anonymous) 2013-09-12 03:01 am (UTC)(link)
That would be nice, but there's a loophole in it that says that so long as a publisher tries to get in contact with the present holder of the copyright, assuming the death of the author means it's in the hands of his/her family, then they can go ahead. You have to prove they didn't try to contact you, and it's both nearly impossible and prohibitively expensive unless you hold a massive intellectual property.

Unrelated, but something I learned from directly being fucked over like this just last week.