Rachel Carson books in order
10 books in the catalogue, about 118 hours of reading in all; the shortest takes 2 hours and the longest 27 hours.
10 standalone books in the catalogue.
Standalone books
Under the Sea-wind 4.4 h 
The Sea Around Us 4.5 h 
The Edge of the Sea 5.1 h 
The Sense of Wonder 1.6 h 
Silent Spring 6.2 h 
Prentice Hall Literature -- Platinum 27.3 h 
Always, Rachel 10.4 h 
Prentice Hall Literature--Timeless Voices, Timeless Themes--Gold Level 19.8 h 
Prentice Hall Literature 21.3 h 
American Earth 17.9 h