New cities began to be heard of in this mountain trade, just as
there had been in the wagon days of the overland trail to Santa Fé.
Pueblo, Cañon City, Denver, all were outfitting and freighting-points
in turn, while from the other side of the range there were as many
towns,--Florence, Walla Walla, Portland,--which sent out the long
trains of laden mules and horses. The pack-train was as common and as
useful as the stage line in developing the Black Hills region, and many
another still less accessible.