Daspuro, Nicola, 1853-1941 (Autor Personal)

LCCN 41003166 (Enrico Caruso, 1938; usage: Nicola Daspuro)

Italian Wikipedia, June 30, 2016 (Nicola Daspuro; born January 19, 1853, Lecce, died December 13, 1941, Naples; Italian writer, journalist, and librettist; he signed L'amico Fritz and other works under the pseudonym P. Suardon)

Treccani WWW site, June 30, 2016: enciclopedia (entry from Dizionario biografico degli italiani, volume 33 (1987): Daspuro, Nicola; born January 19, 1853, Lecce, died December 13, 1941, Naples; for the libretto of L'amico Fritz he used the Frenchified pseudonym P. Suardon; for Giordano's melodrama Mala vita, he signed his own name) http://www.treccani.it/enciclopedia/ricerca/daspuro/

OCLC #748811906 (Mala vita : melodramma in tre atti / versi di N. Daspuro ; musica di Umberto Giordano)