ملف:HughGreenPittc79.jpg

public domain, see below
Crop of page 101 of the 1980 Pitt student yearbook, The Owl. This work was originally published in the United States between 1978 and March 1, 1989 without a copyright mark or notice, and its copyright was not subsequently registered with the U.S. Copyright Office within 5 years.

Renewals for copyrights from 1951 onward (and some, but not all, renewals for 1950 copyrights), as well as original registrations from 1978 onward are available online from the Copyright Office's Copyright Records web site. Online searches, regardless of the year, of the Copyright Office's Copyright Records web site for The Owl itself, editor Rita Tate, or the University of Pittsburgh revealed no renewal entries.

This yearbook was not published with a copyright notice or mark and the copyright was not registered within five years so it is therefore in the public domain.