sentences:  In 1976 his book "Oog in oog met..." ("Face to face with...Tolstoj, T. Mann, G. Bomans, B. Mussolini, W. Mengelberg, B. Bartok and M. Ravel") was published (publ.Heuff).In 1984 he published his memoirs "In 80 jaar de wereld rond" (publ.