Schallert made three guest appearances on CBS's "Perry Mason" between 1957 and 1962, including the role of Donald Graves in the series' fifth episode "The Case of the Sulky Girl," as Dr. Bradbury in the 1961 episode "The Case of the Misguided Missile," and as Len Dykes in the 1962 episode "The Case of the Melancholy Marksman."