found: His May the twelfth ... 1937.
found: Hodgkinson, A.W. Humphrey Jennings--more than a maker of films, 1982: CIP t.p. (Humphrey Jennings) pub. info. (1907-1950)
found: Pett and Pott [MP] 1934: credits (sets, F.H. Jennings)
found: Oxford Dictionary of National Biography, 31 Aug. 2007 (Jennings, (Frank) Humphrey Sinkler; film maker, painter and writer)
found: Silent village, 2010, ©2009: t.p. (Peter Finnemore) p. 94 (b. Aug. 19, 1907, in Walberswick, England; d. Sept. 24, 1950, in Poros, Greece)