Upvoted for the linked article (PDF) about horses/manure in the 1800s->1905 http://www.uctc.net/access/30/Access%2030%20-%2002%20-%20Horse%20Power.pdf http://w

Upvoted for the linked article (PDF) about horses/manure in the 1800s->1905 http://www.uctc.net/access/30/Access%2030%20-%2002%20-%20Horse%20Power.pdf http://www.uctc.net/access/30/Access%2030%20-%2002%20-%20Hor... well worth reading for it's analysis of all the problems with horses that the CAR solved (and, as always, it created new ones) -- like piles of manure 40-60 feet high in cities! Now that problem's limited to D.C.!!