While Nicolae Herlea is evolving ever higher among the world's golden voices, certain renowned musicologists and Publishing Houses have already included him in their monographs, albums, lexicons, anthologies, or encyclopedias to honour his rich and most successful artistic career, e.g. :


Monographs of COVENT GARDEN  (1958)

Monographs of TEATRO ALLA SCALA  (1964)

DICTIONAR ENCICLOPEDIC ROMAN  (1962, Rumänien)

UNVERGÄNGLICHE STIMMEN, by K. J. Kutsch & Leo Riemens  (Sängerlexikon, 1966, BRD)

TEATRALNAYA ENCYCLOPEDIA, by P. A. Markov  (Sowjetunion, 1967)

THE ART OF SINGING - ISKUSTVO PENYA, by I. K. Nazarenko  (1968 Anthology, Sowjetunion)

THE VICTOR BOOK OF THE OPERA - Metropolitan Encyclopedia (1968)

MIC DICTIONAR ENCICLOPEDIC  (1972, Rumänische Edition)

WHO'S WHO IN THE WORLD  (1971/73, Chicago, USA)