. "Mitch Vogel"@en . . . . "Mitch Vogel played Johnny Johnson on Little House on the Prairie."@en . . . . "Mitch Vogel played Johnny Johnson on Little House on the Prairie."@en . "Mitch Vogel (born January 17, 1956) is a United States former child actor who left show business at the age of 20. He is best known for his 1970-73 Bonanza role, where he played the teen orphan Jamie Hunter Cartwright. The character was taken-in by the Cartwrights, and eventually became patriarch Ben's fourth son."@en . . "Mitch Vogel (born January 17, 1956) is a United States former child actor who left show business at the age of 20. He is best known for his 1970-73 Bonanza role, where he played the teen orphan Jamie Hunter Cartwright. The character was taken-in by the Cartwrights, and eventually became patriarch Ben's fourth son."@en . . .