1. Lake County, Indiana, 1890 Maps Public content 1890. Ball, T. H. (Timothy Horton), 1826-1913. Scale 1:187,500. T.H. Ball. T.H. Ball.
2. Map of Lake County Indiana: for schools and offices: scale one half inch to the mile Maps Public content 1890. Ball, T. H. (Timothy Horton), 1826-1913. Blue line. Scale 1:126,720. 1/2 inch to the mile. By T.H. Ball. T.H. Ball.