found: Strauss, R. Scenes from Elektra and Salome [SR] p1986:container (Chicago Lyric Theatre Chorus)
found: Lyric Opera of Chicago WWW site, Apr. 24, 2006:About Lyric; History of Lyric (The company, originally known as The Lyric Theatre of Chicago, was founded in 1954 by Carol Fox, Lawrence V. Kelly (both 28 at the time), and conductor Nicola Rescigno. The latter two founders withdrew after the 1955 season, and the company was renamed Lyric Opera of Chicago prior to the beginning of the 1956 season.)
found: Lyric Opera of Chicago. Lyric Opera of Chicago 1954-1963, 1963:p. 3 (Lyric Opera (then called Lyric Theatre) surprised Chicago by coming into existence in early 1954) p. 4 (In 1956, Lyric Theatre became Lyric Opera)
found: Grove Music Online WWW site, Apr. 25, 2006:Opera; Chicago (The Lyric Theatre, renamed Lyric Opera of Chicago in 1956, was founded by Carol Fox, Lawrence V. Kelly and Nicola Rescigno)