Captain Kangaroo, like Jesus Christ, was someone you could really believe in. With those guys it wasn't about the bells and whistles and the rickety rackety, it was all about the work. Especially Jesus.
Depends. If they lived puritan lives then you can't. But if they've consumed their fair share of alcohol and cigarettes, then you can tell based on how broken their voice sounds as cigarettes degrade the vocal cords and long-term alcohol use tends to affect the speech center.