found: His Österreichs goldene 50er Jahre, 1984:t.p. (Carl Merz)
found: Dtsches Lit.-Lex., 3rd ed.(Merz, Carl; pseud. for Carl Czell; b. 1/30/06; d. 10/31/79)
found: LC data base, 3/15/88(hdg.: Merz, Carl)
found: Email from publisher (Ariadne Press), Sept. 6, 2016:(Carl Merz spelled his name both ways. It is probably immaterial to us which you prefer. Carl Merz was born in Kronstadt in present day Romania, Jan. 30, 1906; his actual name was Carl Czell. It seems more usually to be spelled Carl Merz with the "C")