Indiana Jones' notebook exists as prop on eBay or Amazon. sadly is a Chinese reproduction of the "real" material, so cheap copies and unreadable maps. I'm not a fan of the franchise, but I love the idea!
Discussion
nostr:npub1c4sgd346sl9uh7mjhn99xjsu7t8dwm54kl6hxp3k0qyl4kz6v94qh5aqv4 the lucasarts adventure for 'indiana jones and the last crusade' came with a replica of the grail diary: https://archive.org/details/INDIANA_JONES_THE_LAST_CRUSADE_GRAIL_DIARY/mode/2up