More from my book from 1989.... It instructs you to literally yell "ki hop!" at the end of the forms. I've met people who did this, and always wondered why they did that, but apparently this was actually what they wanted at some point??
Taegeuk 4, the bird form neck strike (open hand high block with knifehand neck strike at the same time).... the knifehand strike wasn't neck level, it's over the guy's head, with the hands almost touching. The one in Taegeuk 3 was like ear level, too. Taegeuk 5, there was no backfist with the side kick on the middle line. Just high block, side kick, elbow strike. In Taegeuk 8, the double jump front kick near the beginning was just a single jump front kick.
Most of it's still the same as today, though, which surprised me a little. None of the actual old stuff is what I learned as the "old way", other then the wider front stance.
Also, this book includes some self-defense techniques, which are all kind of like... the attacker is this guy with this like Freddy Mercury mustache and a bandana and these really over the top dramatic facial expressions, which is cracking me up. Apparently if a guy tries to stab you downwards with a knife, you should grab his arm and continue the circle until he stabs himself in the groin and goes
.
Then there's a code of conduct for Taekwondoists, which is mostly fine and kind of normal stuff like speak respectfully in the dojang and bow when getting on the mat, but does have some... odd things, like that if you're travelling in the car with your instructor you should always open the car door for them, you should not talk during meals, and you should avoid visiting people on holidays or during bad weather.