found: Banks, Steven. Show me the bunny!, 2004:ECIP data sheet (Hillenburg, Stephen)
found: Mattern, Joanne. Day by day with Steve Hillenburg, c2013:ECIP t.p. (Steve Hillenburg) data view (Stephen McDannell Hillenburg; b. 08-21-61 in Fort Sill, Okla.)
found: IMDb, Dec. 3, 2013(Stephen Hillenburg ; Soundtrack, Writer, Producer, Animation department, Director, Art department, Miscellaneous Crew, Actor, Music department, Composer, Sound department ; Born: Stephen McDannell Hillenburg, August 21, 1961 in Fort Sill, Oklahoma, USA ; Alternate Names: Stephen Hilleburg, Stephen Hillenberg, Steve Hillenburg ; He currently owns his own production company, United Plankton Pictures ; For three years he taught marine biology at the Orange County Marine Institute ; earned a degree in natural-resource planning and interpretation, with an emphasis in marine resources ; pursued a master's-degree program in experimental animation at the California Institute of the Arts)
found: New York times WWW site, viewed Nov. 28, 2018(in obituary published Nov. 27: Stephen Hillenburg; b. Stephen McDannell Hillenburg, Aug. 21, 1961, at Fort Sill in Lawton, Okla.; d. Monday [Nov. 26, 2018], at his home in Southern California, aged 57; former marine biology teacher who created a children's show that ballooned into an unlikely cultural phenomenon, SpongeBob SquarePants)