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You’re not going to find a series by Ken Burns, the country’s most famous documentary filmmaker, or a film by Frederick Wiseman, its greatest living documentarian, just dropping on YouTube — unless PBS posts it there.

The constant radio chatter — which includes the unlikely announcing voice of legendary documentarian Frederick Wiseman — doesn’t give the era away, nor do the younger characters’ hairstyles, since mullets and dreads endure.

The proliferation of synthetic images makes the job of documentarians and researchers — safeguarding the integrity of primary source material, digging through archives, presenting history accurately — even more urgent.

She resisted her documentarian niece’s attempts to tell her story for years.

As a documentarian, it’s quite easy to photograph in film because you have a camera, you go into a space and you deal with what’s already there.