In 1959 , Crawford 's appearance on the CBS anthology series '' Playhouse 90 '' was nominated for '' Best Single Performance '' on the '' 11th Primetime Emmy Awards '' . That year 's Emmy Awards also nominated Crawford 's younger brother , Johnny Crawford , for his recurring portrayal of Mark McCain , son of Lucas McCain , on '' The Rifleman ''
11th Primetime Emmy Awards
11th Primetime Emmy Awards
Robert L. Crawford Jr.