Much of GRV's life/bio was derived from what he himself created, from a  
fictional father to his claim that he was born in the US. His real father was  
Solomon Fingerhut, an erstwhile piano teacher whose exploits made the NYT 
in  1896.
 
 The previous-known life of GRV has little to do with history  and/or 
accuracy, despite its frequent repetitions.
 
 My article on his life and bio (with much needed new data, from orig  
sources) appeared in Dec 2014 in AP.
 
Best
Allen Koenigsberg
------------------
In a message dated 12/11/2017 8:08:27 P.M. Eastern Standard Time,  
[log in to unmask] writes:

*  *The G. Robert Vincent Voice Library*by Mary Black Junttonen
(in:/Fortes artis musicae/(2008, Vol. 55: No. 3))

* *"Hello  Posterity": the life and time of G. Robert Vincent, founder
of the National Voice Library*by Douglas Collar (Ph.D. Thesis,
Michigan State University, Dept. of English, 1988)