found: His Statistical inference for Markov processes, 1961.
found: Probability and measure, c1995:CIP t.p. (Patrick Billingsley) data sheet (b. 05-03-25)
found: His Skhodimostʹ veroi︠a︡tnostnykh mer, 1977:t.p. (P. Billingsli) colophon (Patrik Billingsli)
found: Chicago tribune WWW site, May 9, 2011(in obituary dated May 3, 2011: Patrick Billingsley; Pat; b. 1925, Sioux Falls, S.D.; d. Apr. 22 [2011], Hyde Park [Chicago, Ill.], at 85; Univ. of Chicago math. and statistics prof.; actor in Chicago theater, television and Hollywood films)
found: IMDb, May 9, 2011(Pat Billingsley)
