found: Haydn, F. The creation [SR] 1968:label (John Reardon, baritone)
found: LC data base, 10-4-91(MLC hdg.: Reardon, John, 1930- ; usage: John Reardon)
found: Kutsch/Riemens, 1987- :Ergänzungsband (Reardon, John; d. 4-16-88, Santa Fe)
found: IMDB WWW site, May 7, 2018:John Reardon (II) (an actor known for Mister Rogers' Neighborhood (1968), NET Opera Theater (1967) and NBC Television Opera Theatre (1950); encompassed grand opera (Metropolitan, New York City, and Santa Fe Opera Companies, primarily), Broadway musicals (he introduced the Comden-Styne-Green standard "Make Someone Happy" in the 1961 show "Do-Re-Mi"), and television, primarily as a frequent guest on "Mister Rogers's Neighborhood")