found: Bartlett, D. The sportsman's guide to Texas, c1988:CIP t.p. (Jack Unruh) pub. info. (illustrator)
found: Dallas morning news WWW site, viewed Aug. 25, 2016(in obituary dated 20 May 2016: Jack Unruh; Jack Neal Unruh; illustrator; his work graced the pages of books and magazines; settled in Dallas; died Monday [May 16, 2016] at his East Dallas home)
found: Wikipedia.org web site, viewed May 1, 2017:search results (Unruh was born July 31, 1935 in Pretty Prairie, Kansas and primarily resided in Dallas, Texas. He Passed on May 16, 2016).