Books like Drawing from Observation
Brian Curtis
Drawing from Observation is 336 pages, about 6 hours 10 minutes at 250 words a minute.
12 books to read next
How long each takes
Drawing on the Artist Within 4.4 h 
Drawing 5.0 h 
Rapid Viz 2.7 h 
Imaginative Realism 4.1 h 
Space, Time and Architecture 14.3 h 
Language of Vision 4.2 h 
How to Draw Comics the Marvel Way 2.9 h 
How To Draw Manga 2.4 h 
How to Draw Manga 2.4 h 
9 Heads 10.6 h 
Thirdspace 6.1 h 
Sketching 4.7 h Bar height shows length. Estimated at 250 words a minute.