Part B of Unit 3 contains narratives for the cattle trails (marked as I and J on the map). Within the variety of twenty-one trails that ran through Harvey County, the map shows a dozen of the most significant trails. As an 1870 representation of the area, the hand-drawn map depicts the area prior to the existence of Harvey County or its cities or the railroads. In order to give points of reference, the map shows the future boundaries and names of the townships as well as the future sites of the county’s cities.