On My Radar:

Hello Goodbye Hello: A Circle of 101 Remarkable Meetings
by Craig Brown
Simon & Schuster

Trade paperback

From the publisher website:

IMAGINE THESE UNLIKELY—BUT TRUE—ENCOUNTERS: 

Martha Graham and Madonna 

Igor Stravinsky and Walt Disney 

Frank Lloyd Wright and Marilyn Monroe 

Marilyn Monroe and Nikita Khrushchev 

President Richard M. Nixon and Elvis Presley 

Harpo Marx and George Bernard Shaw 

Salvador Dali and Sigmund Freud 

Groucho Marx and T. S. Eliot 

BRILLIANT IN CONCEPTION AND DIZZYING IN EXECUTION, Hello Goodbye Hello is a daisy chain of 101 fascinating true encounters, chance meetings, and disastrous collisions between the celebrated and the gifted, the famous and the infamous. Witty and wicked, Hello Goodbye Hello is the perfect example that truth is stranger than fiction (and infinitely more enjoyable).

Links

Review (New York Times)

6 Oddball Meetings Between Celebrities (Christian Science Monitor)

Review (New York Journal of Books)