Any journalist hunting for a good story has to be willing to do the kind of digging that gets your hands dirty.

It's been awhile since anyone from 9NEWS has been to the warehouse where the station stores its entire 16mm film archive. These reels from the 1950s, '60s and '70s remained untouched and unseen for decades.

As 9NEWS celebrates 70 years on the air, reporter Noel Brennan volunteered for a treasure hunt through history, to pick out a few old reels of film and rediscover stories told by journalists who came before.

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9NEWS (KUSA) is located in Denver, Colorado.