Great Chicago Fire only of rain from July 4 to October 9, causing severe drought conditions before the fire, while strong southwest winds helped to carry flying embers toward the heart of the city. In 1871, the Chicago Fire Department had 185 firefighters with just 17 horse-drawn steam engines to protect the entire city. The initial response by the fire department was quick, but due to an error by the watchman, Matthias Schaffer, the firefighters were sent to the wrong place, allowing the fire to grow unchecked. An alarm sent from the area near the fire also failed to register at the courthouse
Hayden Geological Survey of 1871 correspondence was Hayden's Report No. 7 to Assistant Secretary of the Smithsonian Institution, Dr. Spencer Baird, a bit of which is excerpted below: Yellowstone Lake, WY August 8th, 1871 - Dear Professor Baird, Your letters of June 6th and July 3rd were brought us from Fort Ellis by Lt. Doane who has just arrived to take command of our escort and accompany my party the remainder of the season. ... We arrived at the banks of the Yellow Stone Lake "[sic]" July 26th [actually July 28] and pitched our camp near the point where the river leaves the Lake. Hence