found: Ramin, R.Gustaf Gründgens ... c1933.
found: Goertz, H. Gustaf Gründgens, 1982:t.p. (Gustaf Gründgens) p. 144 (Gustav Gründgens, b. 12-22-1899 in Düsseldorf) p. 148 (d. 8-7-1963 in Manila) p. 17 (author signs name with "v" in Gustav [reprod. of signature])
found: Liebelei, c1996:credits (Gustaf Gruendgens)
found: 100001, 1992(Gründgens, Gustaf (Gustav Heinrich Arnold Gründgens), b. Dec. 22, 1899 in Düsseldorf, d. Oct. 7, 1969 in Manila, German actor, song-writer, film and theater director; was married to Erika Mann)
found: Walach, D. Gustaf Gründgens, c1999:t.p. (Gustaf Gründgens) p. 7, etc. (actor, stage & theater dir./producer; Gustav Gründgens; Gustav Gruendgens; Gustaf Gruendgens; Gustav Heinrich Arnold Gründgens; from 1925 on changed spelling of forename to Gustaf; b. Dec. 22, 1899, in Düsseldorf; d. Oct. 7, 1963, in Manila, Philippines; honorary grave in cemetary of Hamburg-Ohlsdorf)
found: Information from 678 converted Dec. 18, 2014(b. 22 dec 1899; d. 7 oct 1963)