Id this film clip source?

Dr. Orton Parker on The Evils of Drink. Some sources say 1946. Don’t know if that’s accurate or not. I saw this in a documentary. I would guess it was cribbed from some longer feature, but all I’ve found is this same clip.

It appears to be from “Problem Drinkers,” an episode in the newsrel series The March of Time. See http://thewayoutrecovery.com/blog/alcoholics-anonymous-aa-history-part-01/ Your clip starts at about 3:50

Many thanks!