Date of birth	3.5.1939
Date of death	11.6.2020
Occupation	kirjailija sarjakuvataiteilija
Field of Activity	sarjakuvat
Other Forms of Name	O'Neil, Denny (1939-2020)
Identifiers	http://urn.fi/URN:NBN:fi:au:finaf:000087487 (finaf) 0000000084144554 (isni)
Sources	Wikipedia (Dennis O'Neil: Dennis Joseph O'Neil[4][5] (May 3, 1939 – June 11, 2020)[6] was an American comic book writer and editor, principally for Marvel Comics and DC Comics from the 1960s through the 1990s, and Group Editor for the Batman family of titles until his retirement.) katsottu 23.3.2023