All the varied information Gathered from the few he passed-- Some from herders, some from stragglers Gave the missing clew at last As to where old Mac was heading; For that telltale band of steel Stamped along the endless roadway Printed by the turning wheel, Pressed its image on the memory Of the settlers coming back, Who, when questioned by the searcher, Told him that the telltale track Had begun to veer to westward After crossing by the way Leading up the North Platte River, Where the sand wastes stretch away. 19 As he crossed this barren prairie's Sweeping waste of poverty, Billy paused beside the cripple