Unidentified photographer
1841 (ca)
Asa Gray

Illustration based on a daguerreotype
Creative Commons - Wikipedia
Gray, Jane Loring; Gray, Asa (1894) Letters of Asa Gray, vol. 1 (2nd ed.), Boston and New York: Houghton, Mifflin and Company, pp. between pp. 286–287
 
LL/131340