Answer: newsreels

AnswerCrossword Clue
NEWSREELS

Bygone cinema bonuses

NEWSREELS

Bygone documentaries

NEWSREELS

'40s cinema staples

NEWSREELS
Source of much Military Channel material
NEWSREELS
March of Time presentations
NEWSREELSOnetime Movietone productions
NEWSREELSOld feature lead-ins
NEWSREELSOld movie theater lead-ins