Looking for freight dates!

I have some passenger train(Excursion) footage from May 29-31st, 1965. The photographer only chased the last day Durango To Cumbers with 483. So on the days prior or after he could have chased some freights.
There are about 5 minutes of freight runs on the footage.

He also rode a RT Alamosa to Durango to Alamosa in September but I don't think he stayed for freights. That was Sept 21-23.

Here is what we have.

Starts with 480 to Farmington.

Next 498 east from Durango to Gato

Probably the next day 493 west long freight (Gets helper 484 at Gato)

Next 498 and 488 Chama to Cumbres (Might be first Cumbres Turn)

498 and 488 Second turn...all oil eastbound....Guess that makes this before 1965 doesn't it!!!

Lastly there is one odd shot of 492 at Apache Canyon Road (Between Cumbres and Los Pinos), with a freight to Alamosa

Besides the 1965 excursions he does have a few scenes on the Silverton line, one being before 1956 since 476 has a straight stack. There is another that is said to be 1963. Thus more clues. Maybe Olaf can help
piecing these trains together with a date. All this is in 14 minutes of film footage.

Greg

Thanks,
Greg Scholl