Regulations for operation of Aircraft 1920

I found this today and this is the "Real Deal" put out by the War Office of the United States of America in 1920. I particularly like the one about not wearing spurs (likely because it might tear the fabric of the planes built then that the cadets were flying. It's amazing to think this is almost now 100 years ago that these rules were written for training new pilots or "aviators" as they might have been called then.

1.  Don't take the machine into the air unless you are satisfied it will fly.
2.  Never leave the ground with the motor leaking.
3.  Don't turn sharply when taxiing. Instead of turning sharp, have someone lift the tail around.
4.  In taking off, look at the ground and the air.
5.  Never get out of a machine with the motor running until the pilot relieving you can reach the engine controls
6.  Pilot's should carry hankies in a handy position to wipe off goggles.
7.  Riding on the steps, wings, or tail of a machine is prohibited.
8.  In case engine fails on takeoff, land straight ahead regardless of obstacles.
9.  No machine must taxi faster than a man can walk.
10.Never run motor so that blast will blow on other machines.
11.Learn to gauge altitude, especially on landing.
12.If you see another machine near you, get out of the way.
13.No two cadets should ever ride together in the same machine.
14.Do not trust altitude instruments.
15.Before you begin a landing glide, see that no machines are under you.
16.Hedge hopping will not be tolerated.
17.No spins on bakc or tail slides will be indulged in as they unnecessarily strain the machines.
18.If flying against the wind and you wish to fly with the wind, don't make sharp turn near the ground, you may crash.
19.Motors have been known to stop during long glide. If pilot wishes to use motor for landing, he should open throttle.
20. Don't attempt to force machine onto ground with more than flying speed. The result is bouncing and richocheting.
21. Pilots will not wear spurs while flying.
22.Do not use aeronautical gasoline in cars or motorcycles.
23.You must not take off or land closer than 50 feet to the hanger.
24. Never take a mchine into the air until you are familiar with its controls and instruments.
25. If an emergency occurs while flying, land as soon as possible.