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.
The document briefly seen in Riley's book is an autopsy report for Marilyn Monroe.
Randy Travis shot his cameo in one day at 1 A.M.
As stated in the commentary, experts were brought in to match the handwriting of Abraham Lincoln, Queen Victoria and Calvin Coolidge.
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.