npr:

The Unlikely Best-Seller: ‘A Wrinkle In Time’ Turns 50

Imagine, for a moment, that you’re a publisher hearing a pitch about a children’s book whose tangled plot braids together quantum physics, fractions and megaparsecs (a measure for distances in intergalactic space). The book also casually tosses out phrases in French, Italian, German and ancient Greek. Sound like the next kids’ best-seller to you?

It didn’t to the many publishers who rejected Madeleine L’Engle’s A Wrinkle in Time, which turns 50 this year. The novel was an immediate hit with young readers and with critics when it was published, and it won the Newbery Medal in 1963. Since then, it has remained a beloved favorite of children and adults alike.

But it almost didn’t see the light of day. At the time, L’Engle already had six books to her name, but publishers were perplexed by her latest.