Books like Harpo Speaks!
Harpo Marx, Rowland Barber
Harpo Speaks! is 482 pages, about 8 hours 50 minutes at 250 words a minute.
12 books to read next
How long each takes
My Autobiography 9.4 h 
I Am Not Spock 2.5 h 
Autobiography of a Yogi 9.4 h 
Wanderer 8.0 h 
The Vixen Diaries 3.5 h 
My Wicked, Wicked Ways 7.0 h 
American on Purpose 6.1 h 
King of Bollywood 4.6 h 
Total Recall 12.2 h 
Greenlights 5.6 h 
Born a Crime 5.6 h 
Based on a True Story 4.7 h Bar height shows length. Estimated at 250 words a minute.