John Mark Ockerbloom
Apr. 11, 2006
Very few serials completely copyrighted
after 1922
•WorldCat lists over
200,000 serials with significant dates
between 1923 and 1950
–May undercount based
on journals not starting or ending in that range
–May overcount based on
duplicate entries for some serials
•We found only ~1300
serials that renewed any issue copyrights
during that time
•Most significant
serials publishing then did not renew all (or any) of their issues
–Weak correspondence
between extent of renewal and significance
to researchers