❐ How a flu virus shut down the US economy in 1872 – by infecting horses
2020 Dec 03
Henry Bergh (in top hat) stopping an overcrowded horsecar, from Harper's Weekly, Sept. 21, 1872. Library of Congress
A fast-moving equine flu cratered the US economy in the fall of 1872, showing all too clearly that horses were essential and deserved better treatment.