[1] A successful radio actor, Lovejoy played Broadway Harry on the Gay Nineties Revue[2] and was heard on the 1930s crime drama series Gang Busters.

In radio soap operas, Lovejoy played Dr. Christopher Ellerbe in Valiant Lady,[3] Sam Foster in This Day Is Ours,[4] and he had the roles of Brad Forbes on Brave Tomorrow[5] and Larry Halliday in Bright Horizon.

He was in several war movies, notably Stanley Kramer's Home of the Brave (1949), Breakthrough (1950), Joseph H. Lewis's Retreat, Hell!

[7] In 1951, he had the title role in I Was a Communist for the FBI with co-stars Ron Hagerthy, Paul Picerni, and Philip Carey.

Lovejoy's final television performances include the episode "County General" (March 18, 1962) on the ABC series Bus Stop with Marilyn Maxwell in the role of Grace Sherwood.