[Granville-Hough] authoritative information on copyright

[Trustees and Executors for Granville W. Hough]

Teri Lynn Herbert passed on the following URL's for those who want to 
know more about the technicalities of copyright:

http://librarycopyright.net/digitalslider/
   just slide that red arrow on the right to the dates you want to see.

http://www.writerswrite.com/journal/sept97/cew2.htm
   text explanation