Pretty self-explanatory, but I was wondering if anyone could provide any leads on how to search for any rights holder for a long-defunct U.S. publication? The publication, a newspaper published in Southern California, ceased publication c. 1968. The editor/publisher was not a young man then.
Any assistance on how to determine who the rights holder is, or if there even is a rights holder, would be greatly appreciated. The same could prove greatly useful in attempting to track down other rights holders for the many, many other defunct U.S. racing publications.