1972 Iowa Caucuses, the first one to be held in January and the one which has become the standard for electing a President for the last 40 years.

An interesting one then. It's changed a lot since. But then, so have politics in general. Had they known . . .

Here's a report via NBC News, originally broadcast on January 25, 1972 - when the original caucus was held on the 24th.

Horse races past.