Puerto Rican people
Negroni has authored over 200 articles which have been published in various U.S. and foreign journals. His research of the Corsican-Puerto Rican connection has provided a wealth of information about the Puerto Rico's ties with Corsica. Among Negroni's works is "La Genealogía de Puerto Rico" (The Genealogy of Puerto Rico) which provides an indepth study of the Puerto Rican people.