Don't know if this has been mentioned before:
AMC has "S.A.C." with Jimmy Stewart on this month. About 1/4 the way
thru the film he is in the big bomber (4 jets + 6 radials; I forget the
Name) talking to all the crew. As he approaches him, the navigator
briefly holds up a Jeppesen flight computer. I imagine this counts as a
slide rule. It's very quick, but you can see it pretty clearly.

John