Kelman appeared in all thirty-four episodes of Our Man Higgins, which might be loosely compared to the more successful NBC sitcom, Hazel starring Shirley Booth as a nosy housekeeper for an attorney, played by Don DeFore, his wife, and their son.
[2] On January 2, 1958, Kelman was Norman Fisher in the episode "The Big Jade" of NBC's pioneering police drama, Dragnet, starring Jack Webb.
From 1958 to 1959, young Kelman played Homer Foley in three episodes of the NBC children's western series, Buckskin, with Tommy Nolan and Sally Brophy, as a son and his widowed mother living in a hotel in a small fictitious Montana community.
In the 1960 season premiere of the ABC/Warner Brothers detective series, 77 Sunset Strip, the then 10-year-old Kelman appeared as Randolph in the episode "Attic", set in a remote mountain hideout.
The episode stars Roger Smith as Jeff Spencer and features Kathleen Crowley, Cynthia Pepper, Lee Van Cleef, and Gary Vinson.
On November 29, 1968, Kelman was cast as Donny Clement in the episode "The Fatal Hours" of the ABC police drama Felony Squad, with Howard Duff and Dennis Cole.
In 1969, he played an older teenager, Josh Odam, in the episode "Mexican Honeymoon" on CBS's My Three Sons sitcom with Fred MacMurray and Beverly Garland.
[5] Kelman played the character Mike in the coming of age picture, The First Time, a 1969 comedy about three inexperienced teenagers pursuing a sexual encounter in what turns out to be a nonexistent bordello near Buffalo, New York.
His older brother, Terry Ross Kelman (born 1947), is a former child actor whose screen appearances occurred between 1954 and 1959, with his last work in two episodes of the NBC western series, Wagon Train, starring Ward Bond.