Just like Miranda, Rebecca Stead's hometown is NYC (source).
The Laughing Man was really from Rebecca Stead's childhood (source). But was he a time traveler?
Rebecca Stead was formerly a public defender (source). That's what Richard is in the book and what Miranda's Mom will become.
The New York City subway is one of author Rebecca Stead's favorite places to write (source).
Rebecca Stead met Madeline L'Engle, the author of A Wrinkle in Time, at a book signing when she was a kid. She even had her book inscribed "tesser well" – just like Miranda (source).
Like Miranda, Rebecca Stead also worked at a sandwich store 40 minutes a day when she was a kid (source).