You’re looking at John Wayne’s script for Rio Bravo (1959). It’s just one of the many incredible things being auctioned off by his family.
You can see more of it here, and I encourage you to do so.
Not just to marvel at things very few of us could ever afford — like his uniform from Sands Of Iwo Jima (1949) or hat from Man Who Shot Liberty Valance (1962) — but to read various contracts, letters from John Ford, get well cards from Hank Worden and much more.
I’m a bit bleary-eyed this morning from hours of doing just that.