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National Treasure: Book of Secrets (2007) Poster

Trivia

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The document briefly seen in Riley's book is an autopsy report for Marilyn Monroe.
The guy who gets his car stolen by Ed Harris in London is the same guy who got his car stolen by Sean Connery in The Rock, another of Jerry Bruckheimer's movies which also starred Nicholas Cage.
When showing the map of the grounds to the President, Ben tells him it belonged to a slave of Washington's named Charlotte. This is the same name as in the clue to the Templar treasure that Charles Carroll gave to Gates' ancestor (and which turned out to be the name of a ship). Presumably Mt. Vernon was one of many dead ends which Ben pursued in his search for Charlotte and the Templar treasure prior to the events of the first movie, which would explain why he knew about the hidden compartment and how it worked, or it might just be a sly reference to the first National Treasure (2004).
In the second scene with Agent Sadusky (Harvey Keitel) and his two agents, Agent Sadusky can be seen wearing crossed US and Marine Corps flags on his lapel. Keitel is a former marine.
The night before the scenes at the University of Maryland were to be filmed a half inch of snow fell. The crew then had to use fire hoses to hose down the entire McKeldin Mall and nearby locations to melt the snow for continuity in the movie.
Director of photography Amir Mokri was replaced by John Schwartzman several weeks into shooting. This was reportedly due to "creative differences" between Mokri and director Jon Turteltaub.
It should come as little surprise that Patrick Gates would be associated with the Confederacy. In the original National Treasure (2004), Patrick Gates displayed in his library a portrait of CSA General Thomas "Stonewall" Jackson.
Because of her role in The Queen (2006), Helen Mirren was invited to meet Queen Elizabeth II, but couldn't make the meeting because she was in South Dakota filming this movie.
The area of the Library of Congress that Gates finds the Book of Secrets in does not exist as an area of book shelves. These book shelves were constructed as a prop library in a previously empty balcony of the Library's Main Reading Room and dismantled after the scenes were shot.
For the theatrical release, the film was called "National Treasure: Book of Secrets," but for the DVD release, the title was changed to "National Treasure 2: Book of Secrets."
As stated in the commentary, experts were brought in to match the handwriting of Abraham Lincoln, Queen Victoria and Calvin Coolidge.
The miniature bottle of whiskey Ben Gates uses to splash his face to fool the Buckingham Palace security is a single malt from the Isle of Jura distillery.
Release prints were delivered to theaters with the fake title 'Cinnamon'.
Jon Voight's character notes that President Franklin D. Roosevelt installed a wooden panel over the front of the Resolute Desk, in order to conceal his wheelchair. Voight played Roosevelt in Pearl Harbor (2001), also produced by Jerry Bruckheimer.
The name on a realty sign in the background of one of the scenes is Segars' Realty. A reference to one of the film's executive producers Charles Segars.
In the Booth diary the remaining part of the page after the words Thomas Gates Artifex (artifex: Latin) adj., skilled, masterful) is the word Aenigmatum, or enigma. The Latin word and Greek word brought together mean one who is skilled in puzzles.

Spoilers 

The trivia items below may give away important plot points.

The script originally called for Mitch Wilkinson to stab Patrick Gates in the scene where they escape from the flooding gold city. This was taken out in post because it made the character "cross a line" that the director felt ought not be crossed. This is why there are almost no shots of Patrick Gates remaining in this scene: he was bleeding, and that's hard to hide. His sweater in the next scene had been ripped from the stabbing, and they were able to "unrip" his shirt with CG.
The code seen in Booth's Diary is an actual text encoded with Playfair method using the keyword DEATH. The complete text says: "La Boulaye lady will lead to Cibola temples of gold".
Randy Travis shot his cameo in one day at 1 A.M.

See also

Goofs | Crazy Credits | Quotes | Alternate Versions | Connections | Soundtracks

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