Books like American Sign Language Dictionary
Martin L. A. Sternberg, Herbert Rogoff, Eduself
American Sign Language Dictionary is 627 pages, about 11 hours 30 minutes at 250 words a minute.
9 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 
Learning American Sign Language 6.8 h 
The Joy of Signing 6.3 h 
Master Asl 5.7 h 
Aprende Señas Conmigo 7.2 h Manual de Lengua de Señas Cubanas 2.0 h 
Zimbabwean Sign Language Dictionary 5.5 h Bar height shows length. Estimated at 250 words a minute.