History: Group of all the members of the Hayden Geological Survey, made while in camp at Red Buttes, Wyoming. (1870) [2183x1602]

http://i.imgur.com/Qe3NyI2.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/52u7bm/group_of_all_the_members_of_the_hayden_geological/?utm_source=ifttt