Author threatens to sue, deemed unfit as source
A Chicago-based producer of other encyclopedias (no, not Encyclopædia Britannica) has threatened to sue Wikipedia for copyright infringement, but has yet to provide any specific examples. However, revelations about misinformation in those encyclopedias, including some that made its way into Wikipedia, have prompted Jimmy Wales to call the author an unsuitable source in any event.
The source in question is Jay Robert Nash, a prolific author who primarily produces reference works and anthologies about crime. He is currently cited as a reference in a number of crime-related articles, most of which can be found by following the what links here feature. Although crime is his specialty, Nash has also branched out into other subjects, including with his 1976 book Darkest Hours: A Narrative Encyclopedia of Worldwide Disasters — From Ancient Times to the Present.