From the library of Life Magazine images available for sale through an agreement with Google: “Marine biologist and author Rachel Carson, 1952.” Photo by Hank Walker. [Photo no longer available at that site; this is the same image, I believe]
This photo was taken about the time Carson left the U.S. Fish and Wildlife Service, about the time her best-selling book The Sea Around Us was a hit. This was a decade before the publication of her most famous work, Silent Spring, and 12 years prior to her death from cancer in 1964.
Posted by Ed Darrell 
Millard Fillmore's Bathtub 