Why can't they get the dates right?
1973, March 1974, phooey!
The Three Musketeers was in theaters as a first-run film in September, 1974. I remember the hoopla and anticipation the week before the film was released and had the pleasure of seeing it opening night--my 3rd day in a new college and my first date with my future bride.
September 1974 is the month of first release. The Four Musketeers followed the next year, 1975.
C'mon, it wasn't some unheard-of indie--it was a major film with an all-star cast. How hard is it to get something so simple right? What other errors are there on this site?
Makes you wonder about IMDB's data.