Books like 13 Little Blue Envelopes
Maureen Johnson
13 Little Blue Envelopes is 331 pages, about 6 hours 4 minutes at 250 words a minute.
12 books to read next
How long each takes
Punkzilla 4.5 h 
Love Letters to the Dead 5.9 h 
Miss Rumphius 35 min 
Just One Year 6.3 h 
Cartas de Amor a los Muertos 6.3 h 
Letters to the Lost 7.6 h 
Onion Tears 1.1 h 
Clover Moon 5.9 h 
Love, Lucas 5.5 h 
My Sister Lives on the Mantelpiece 4.4 h 
Love, Aubrey 5.0 h 
The Astonishing Color of After 8.7 h Bar height shows length. Estimated at 250 words a minute.