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3
4
Author: Wakefield, Manville B.
Published 1965
Record Source: Published Materials
Subjects and Genres: '; ...Railroads, Gravity History....
Book
5
Author: Graeff, Arthur Dundore, 1899-1969.
Published 1976
Record Source: Published Materials
Subjects and Genres: '; ...Railroads, Gravity Pennsylvania Berks County....
Book
9
Published 2002
Record Source: Published Materials
Subjects and Genres: '; ...Railroads, Gravity Pennsylvania Wayne County....
Book
12
Published 2004
Record Source: Published Materials
Subjects and Genres: '; ...Railroads, Gravity Pennsylvania Wayne County....
Book
16
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