Richards,57页 "Herbert Marshall, 60, In Critical Condition" (1951年5月8日). The Knickerbocker News,B9页 (页面存档备份,存于互联网档案馆). "Stricken Star" (1951年5月14日). The Bend Bulletin,8页
Victims of Leukemia Will Benefit From Son's Fatal Illness (PDF). The Knickerbocker News. 1958-05-12: 6A [2014-08-07]. (原始内容存档 (PDF)于2015-09-24). Red Skelton's