He then became a regular part of the Lunt's unofficial rep company of actors, including Sydney Greenstreet, Thomas Gomez, and Montgomery Clift, with whom he appeared in There Shall Be No Night and Mexican Mural.

[2] In the later part of his career, LeMassena did several seasons of regional work at Meadowbrook Theatre in Rochester, Michigan, and also had a long run in Broadway's Deathtrap.

[5] He appeared as the Heavenly Friend who serves as a guide to Gordon MacRae on his return trip to Earth in the 1956 film version of Rodgers and Hammerstein's Carousel.

LeMassena appeared in other roles, however, including a stint towards the end of his life as Ambrose Bingham, on the daytime soap opera As the World Turns.

He also appeared throughout the 1960s in several television adaptations of stage plays on the Hallmark Hall of Fame, including a 1960 production of Shakespeare's The Tempest, starring Maurice Evans, Lee Remick, Roddy McDowall, and Richard Burton (LeMassena was Antonio), as well as a 1967 production of Bernard Shaw's Saint Joan, starring Geneviève Bujold in her American television debut as Joan of Arc, and featuring LeMassena as Jean d'Estivet.