06-25-2008, 09:40 PM
Don't know if there is a standard for "fair use" by non-profit use like you are describing. For education use, we use a figure of 10% or one chapter here at the library I work at. As for finding the rights holder, there are a number of clearance operations around that can research that for you. We use Copyright Clearance Center. Depending on the original publisher, the different copyright clearance databases may already have entries for the successive holders of rights. If not held by a later publisher, the rights may have reverted to the author or his estate.
Now, since this was published before 1978, its copyright period was 28 years. The copyright could be extended, but someone would have had to file the application paperwork to do so in 1972. Without a copyright statement in the book, it would have automatically expired since it was published before 1964. Everything published after 1964 had its copyright automatically extended to 95 years by a law enacted in 1992, no copyright statement is needed if it was also published after 1978. if you want to investigate yourself to see if the copyright was renewed, here is some information on doing that, http://www.loc.gov/copyright/circs/circ22.html.
Now, since this was published before 1978, its copyright period was 28 years. The copyright could be extended, but someone would have had to file the application paperwork to do so in 1972. Without a copyright statement in the book, it would have automatically expired since it was published before 1964. Everything published after 1964 had its copyright automatically extended to 95 years by a law enacted in 1992, no copyright statement is needed if it was also published after 1978. if you want to investigate yourself to see if the copyright was renewed, here is some information on doing that, http://www.loc.gov/copyright/circs/circ22.html.