Books like Franklin Is Lost
Paulette Bourgeois, Brenda Clark, Sharon Jennings
Franklin Is Lost is 30 pages, about 33 minutes at 250 words a minute.
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How long each takes
Yertle the Turtle 1.6 h 
Demon Dentist 7.9 h 
A Wonder Book for Girls and Boys 3.8 h 
Bedtime for Frances 35 min 
Little Polar Bear 29 min 
Ahoy There, Little Polar Bear 28 min 
What's Happening to Me? 1.0 h 
Finding the Titanic 53 min 
The Dark 43 min 
Muertos de Susto 1.3 h Bar height shows length. Estimated at 250 words a minute.