Books like The Silver Dolphin
Velda Johnston
The Silver Dolphin is 324 pages, about 5 hours 56 minutes at 250 words a minute.
8 books to read next
How long each takes
The Time of the Hunter's Moon 7.0 h 
Here I Stay 5.9 h 
Winterwood 4.7 h 
Dark Interval 4.4 h 
American Gothic 4.1 h 
The Golden Unicorn 5.8 h 
Flaming Tree 5.3 h 
Waiting for Willa 3.5 h Bar height shows length. Estimated at 250 words a minute.