From the video:
Opening kickoff: whole bunch of non-players/non-officials in the end zone. WTF?
No yard line numbers - glad we have those, today. Bix X at the 50, and circles at the 40s. Don't know what the "V" shaped lines from the 2 to the goal posts are all about (?).
Team A does not stop for one full second after shifting (*)
Lots of leaving early by linemen - no calls.
Interior linemen move to different positions after placing hand on ground (*).
When the teams shift to their final positions, the guys that don't move very far are still march-stepping in time with the rest of the players moving. Cute.
Third play from scrimmage, entire offense makes abrupt movement to change positions (a FST today), AND several defensive players charge across NZ and there is contact between several players of both teams, but they play on. (*)
On what would be FSTs today, I see the LOS guy throw up his left arm and move his right hand to his mouth, like he's going to sound a whistle, but they play on.
The LOS guy seems to signal to the box man/chain crew, to move, following many downs, and they are on the near - presumed pressbox - side.
Absolutely no time out signals. Ever.
Absolutely nothing resembling holding. Hardly any use of the arms/hands for blocking at all. Most blocks are attempted low blocks. Love it.
I see the use of S10 a lot, and I think it means that there was a foul, because the next down seems to be from the previous spot - like there isn't a distance penalty, they just repeated the down (?).
Now, at the -8:07 mark, a defensive player hurdles an offensive lineman. The LOS guy does the arm signal/hand to mouth thing, and the next down is, in fact, 5 yards farther downfield than the previous spot. No flag, no time out signal. But, apparently, a foul was called.
Ah. A72 catches a forward pass. Guess that was OK back then.
On a scoring play, you see 3, 4 photographers literally IN the end zone during the down. WTF?
Cold. Lots of snow around the field. Visible breath.
(*) may not have been a rule back then