found: Forward!, 2018:title page (Yorick Blumenfeld) page 4 of cover (been writing all his life ; reported from over ninety countries as a foreign correspondent ; over the past few decades he has been examining the future as the general editor of Prospects for tomorrow and in books like Scanning the future and 2099, as well as on his blogs)
found: Threatened Viet Nam, 1961:title page (F. Yorick Blumenfeld)
found: sf encyclopedia WWW site, August 11, 2018, viewed online November 22, 2018(Frank Yorick Blumenfeld, born: Amsterdam, Netherlands, April 11, 1932 ; [lived] in the US from 1941 and latterly in the UK ; he wrote The Naked and the Veiled: The Photographic Nudes of Erwin Blumenfeld (1999) ; sf novel, Jenny Ewing: my diary ; nonfiction: Scanning the Future)
found: Geni WWW site, viewed November 22, 2018(Franck Yorick Blumenfeld, [born] April 1932)