Books like Master Asl
Jason E. Zinza
Master Asl is 309 pages, about 5 hours 40 minutes at 250 words a minute.
6 books to read next
How long each takes
A Basic Course in American Sign Language 5.1 h 
For Hearing People Only 10.1 h 
Seeing Voices 3.5 h 
American Sign Language Dictionary 11.5 h 
Learning American Sign Language 6.8 h 
The Joy of Signing 6.3 h Bar height shows length. Estimated at 250 words a minute.