2
Published 1990
Record Source: Published Materials
Subjects and Genres: '; ...Locks (Hydraulic engineering) Pennsylvania Freemansburg....
Book
3
Author: Wright, Benjamin, 1770-1842.
Published 1824
Record Source: Published Materials
Subjects and Genres: '; ...Locks (Hydraulic engineering)...
Book
4
Author: McKelvey, William J.
Published 1978
Record Source: Published Materials
Subjects and Genres: '; ...Locks (Hydraulic engineering) Middle Atlantic States History....
Book