Famous newspaper picture of horse -- who is it?

There is a famous newspaper full-page newspaper ad of a racehorse ridden by a jockey. (At least I think it’s an ad, though it might be a story.) The picture takes up most of the page. I was reminded of it recently when I saw it, of all places, while watching a rerun of Hee Haw. Grandpa Jones picks up the paper and puts it in front of his face, and there is that famous picture. I used to know who the horse is, and now it is driving me crazy. I do not believe it is Secretariat, for the colors and the year are wrong. The episode was broadcast in December of 1971. Does anyone have any idea what I am talking and what this horse is?

Do you remember any details-head on, from the side, angled shot? Close up or far away?

You definitely need to give more details. A photograph is taken the winner of every race, and has been for decades before Hee Haw. It could have been a recent Kentucky Derby winner or a well-known race horse of the era.

You appropriately ruled out Secretariat. He was relatively unknown prior to the 1973 Kentucky Derby win.

Carry Back won the '61 Kentucky Derby and has a great story.
Or possibly Man O War.

The Kentucky Derby is for 2 year olds. Secretariat was just a tiny little foal in '71.

Actually, the Derby is for 3 year olds. Secretariat was born in March 1970.

Was this it?

Now that you mention it, you’re right. My bad. I was mistakenly remembering that it’s all the 2yo races everyone looks at and speculates on up-and-coming Derby contenders, and conflating that with the Derby itself. I personally don’t follow the 2 year olds, don’t start looking at them until 3, and don’t bet on anything except 4 and up races, so I’m not really too familiar with the young ones.