1
Author: Haworth, James.
Published 1875
Record Source: Published Materials
...Schuylkill River Power utilization....
Book
2
Author: Nystrom, John W. 1824-1885.
Published 1874
Record Source: Published Materials
...Schuylkill River (Pa.) Power utilization....
Book
3
Author: Birkinbine, Henry P. N.
Published 1878
Record Source: Published Materials
...Schuylkill River (Pa.)...
Book