Honestly, weston1879, I have been banging around the Colorado school bus industry on and off since the early 1970s, and I can't recall having heard of the incident you describe, while I certainly have heard about the 1972 accident on multiple ocasions. It is entirely possible that because the incident was considered a "save" instead of an accident, it didn't receive significant media coverage in the big Front Range cities. But the ever-active rumor mill that comes with our industry should have sent news of such an incident into the far corners of Colorado. Do you have a date when this was alleged to have happened? Have you researched the Gunnison and Salida newspapers?
Mike