The Great Conductor McDonald's commercial is only 1/2 way cut leading into the Crispy Wheats 'n Raisins commercial.
Also: In the Crispy Wheats 'n Raisins commercial, the actress playing the Dorothy character is Geri Rechisi, who was best known for playing the replacement Jan Brady (replacing Eve Plumb) on the 1977 "The Brady Bunch Hour" variety show.
Somehow, I always knew back in my mind that CF aired well after 1976. Now, if someone has recordings of the short-lived live host airings of CF, that would be a 24 karat platinum find! But, from what I understand, that would be as likely as finding a recording of the first ever Tonight Show With Johnny Carson. With this clip, however, I would have to say that in all of the years of visiting vintage TV sites, you have the best research team ever! A job well done would not even begin to cover it! Epic!
In the '60's they were just "Sugar Pops." That was back in the day when the Hanna-Barbera cartoons were on the box. The only one I remember, unfortunately, is Quick Draw McGraw on the box of Sugar Smacks, now called Honey Smacks, though I haven't seen them in a while. They were 56% sugar...