Date of Birth: 1840
Date of Death: 1882
O’Sullivan was a photographer most know for his work during the Civil War, and on the Western United States. He fought in the Civil War briefly for the Union Army before being honorably discharged.
He was appointed chief photographer for the Department of the Treasury in 1880 but was ill with tuberculosis, so he left this position after only a few months because of poor health.
This is his most famous image, entitled Harvest of Death. I rate it a 10/10. It is kind of terrifying to be honest. With the fog/low photo quality in the background, the photo becomes even more eerie.
http://en.wikipedia.org/wiki/Timothy_H._O'Sullivan
Fissure Vent of Steamboat Springshttp://www.masters-of-photography.com/O/osullivan/osullivan_fissure_vent.html 
