121
Author: Wallace, William S.
Published 1913
Record Source: Published Materials
Subjects and Genres: '; ...Water-supply Pennsylvania Rates....
Book
122
Published 1799
Record Source: Published Materials
Subjects and Genres: '; ...Water-supply Pennsylvania Philadelphia....
Book
123
Published 2020
Record Source: Published Materials
Subjects and Genres: '; ...Water-supply....
124
Published 1975
Record Source: Published Materials
Subjects and Genres: '; ...Water-supply engineers Biography....
Book
125
Creator: Minard, Duane
Record Source: Archival Materials
Subjects and Genres: '; ...Delaware River--Water supply--20th century Local sources...
Manuscript
126
Record Source: Published Materials
Subjects and Genres: '; ...Water supply Pennsylvania Ambler...
127
128
Published 1897
Record Source: Published Materials
Subjects and Genres: '; ...Water-supply Pennsylvania Philadelphia....
Book
129
Published 1822
Record Source: Published Materials
...Philadelphia Water-supply....
Book
130
131
Record Source: Published Materials
...Pittsburgh (Pa.) Water-supply....
Serial
132
Published 1887
Record Source: Published Materials
...Philadelphia (Pa.) Water-supply....
Book
133
Published 1877
Record Source: Published Materials
...Bethlehem (Pa.) Water-supply....
Book
135
Author: McElroy, Samuel.
Published 1870
Record Source: Published Materials
...Harrisburg (Pa.) Water-supply....
Book
138
Author: Davis, Drew K.
Published 1989
Record Source: Published Materials
...Pennsylvania Water-supply Pike County....
Book
139
Author: Cresson, Charles M. 1828-1893.
Published 1875
Record Source: Published Materials
...Philadelphia Water-supply....
Book