This is kind of OT, but I came across this the other day and thought McDonalds fans might be interested (pardon me if it's been posted before, I didn't look through the entire thread)
​​​​​mcmenu-do-it-yourself-mcdonalds-restaurant-recipes
This pdf is a compilation of McDonalds' recipes and techniques based on the restaurant production guides of the 1950s, 60s, and 70s.
I was looking for the original Fries recipe. And I found it. Also, original Secret Sauce (more complex than you'd think). Haven't tried to make the Fries yet, but I'm gonna.