Hollywood Outtakes: In Pursuit of Southern Pacific GS4's

This is the sixth in a series of videos drawn from a pool of 1940's-era Hollywood feature-film outtakes and stock shots. I don't know what film they were shot for, but it's possible that they were for a Sam Katzman-produced movie serial. The plot seemed to involve cars chasing trains.
Regardless, the stars of this show are Southern Pacific's magnificent streamlined GS-4 4-8-4's. We see them in three shots:
0:00 This is train No. 76, The Lark, Southern Pacific's extremely popular all-Pullman train between San Francisco and Los Angeles. The location is unknown, but it appears to be morning somewhere in the Los Angeles area. There are twenty cars behind that GS-4.
0:58 Another day, another shot of a 20-car Lark consist. Only this is just the first section of No. 76!
1:43 The rest of this video is one long pacing shot of an unknown GS-4 at the head of an unknown train. It's twilight, and the film was likely underexposed to make it look like night. And while the cameraman sometimes seems unsure of what his subject is, there are some thrilling moments here as that streamlined nose edges in and out of the frame.
The original film is silent, so I've added some appropriate music.

Видео Hollywood Outtakes: In Pursuit of Southern Pacific GS4's канала Speed Graphic Film and Video