Princess Diana's letter in President Trump's new book is on p. 86, with his recollections about her on p. 87.
8+7=15/51=17(Q)x3

And John F. Kennedy Jr.'s letter is on p. 88, with his recollections about him on p. 89.
8+8=16/19="POTUS & JFK JR. RELATIONSHIP" (part of Q drop 1082)
16=the 16th of July '99 (9+9=18=R), date of the crash
8, 88=new beginnings
4+4+4+4=1111, 1111, 1111, 1111
8+9=17(Q)

P. 51 is a picture of POTUS in silhouette in front of the American flag.
51=17(Q)x3

Did President Trump do that on purpose? Hmm...

He wrote that Jr. would've "almost absolutely" become the Senator of New York and then the President of the United States.

It's a beautiful book! 💗