(Contains some spoilers, do not read if you haven’t completed the book)
Page 4- Anthony’s undercover CIA name, "Abdul R. El-mmih" - (hidden part - ‘Himmler’ in the name spelled backwards, up to the middle initial).
Page 13 - Tri-split screen photograph of Germany, Italy and Japan (hidden part - obviously, the Axis powers in WWII)
Page 18 - President gives the HEC building contract to the "National Alloy Zinc and Industrial Steel" - (hidden part - starting letters of name of company spells "NAZIS".
Page 19 - President said, "May our mutual prosperity endure for a thousand years." - (hidden part - another reference to 1000-year Reich)
Page 31 - "Supervision Security" - (hidden part - ‘SS’ used later on page 105 )
Page 55 - 2nd Paragraph - Starts with the word "Kind....." - (hidden part - circle the first letter of 'Kind' and the next 15 words, the entire passage gives away the end of the book, so I will not spoil it here)
Page 72 - "God-damn piece of paper" (hidden part - reference to George W. Bush quote about the Constitution during his presidency)
Page 88 - President’s Secretary is named "Traudl" - (hidden part - Hitler’s secretary’s name was Traudl)
Page 94 - Dr. Abrams is replaced with "Dr. Ele G. Nemrd" - (hidden part - ‘Dr. Mengele’ in the name spelled backwards, up to the first name)
There are a few more but these are the major Easter eggs.