After some research I have found a list of the possible documents inside the file from the Etsy store
ToyandPropMasters
Though I'm not 100% sure it's all screen acurat altogether there are 39 classified documents, which follow the story line of the motion picture Here’s what I found:
• The accurate olive drab FBI folder
• The “DIG” photo in B&W
• The torn MUST READ newspaper article!
• Top Secret letter with German writing translated into English
• A Western Union Telegram
• FBI profile on Abner Ravenwood (2 Pages)
• An illustration of the Staff Of Ra
• Map of Nepal (NEPAUL)
• US Army Intelligence on Nazi involvement (4 Pages)
• Major Arnold Toht photo
• Major Arnold Toht FBI profile letter (2 Pages)
• Colonel Herman Dietricht photo
• Colonel Herman Dietricht FBI profile letter (2 Pages)
• Dr. Rene Belloq photo
• Dr. Rene Belloq FBI profile letter (2 Pages)
• Cairo Museum Letter to Belloq
• Map of Northern Egypt showing the location of Tanis
• A B&W photo of a WWII era plane flying over the pyramids
• A geometric drawing of the map room
• Belloq’s famous 11” X 17” drawing of the Tanis map room
• A vintage map of Gibraltar
• A torn thick card showing the Egyptian Hieroglyphics and the Ark of the Covenant
• An 11” X 17” page from the Jewish Encyclopedia about the Ark of the Covenant
• A two page letter written in Latin
• A 9” x 14” article in German about the Ark of the Covenant
• A letter about the Ark of the Covenant from German scientists
• A hand sketch drawing of the Ark of the Covenant with notes
• A Latin mimeograph copy of MARBODAEI
• A letter of Garments of the High Priests
• A mimeograph copy of the stone breast plate
• A Top Secret drawing of the German “WING” plane, which will be used to transport the Ark back to Berlin
• A Top Secret drawing of the German “WING” plane, which shows the front view as well as the top view.
Attached are some referance photos Anyone have an idea where to start? lol