Horses in the City (gallery)

Throughout the nineteenth century, urban transportation in the United States relied heavily on horses. Horses shared urban spaces with humans and powered new public transit networks.  This gallery tracks the evolution of horse-powered transit from the heyday of horse carts and omnibuses to the early twentieth century, when horse-powered vehicles were elbowed out by electrical and cable cars. 

How did cities have to adapt to accommodate the increasing numbers of urban horses? What changes in urban life did these horses make possible?