21
Author: Pavlak, Eric.
Published 1976
Record Source: Published Materials
Subjects and Genres: '; ...Covered bridges Pennsylvania....
Book
22
Subjects and Genres: '; ...Covered bridges Pennsylvania....
Book
23
Published 1862
Record Source: Published Materials
Subjects and Genres: '; ...Railroad bridges Pennsylvania....
Book
24
Author: Zacher, Susan M.
Published 1989
Record Source: Published Materials
Subjects and Genres: '; ...Covered bridges Pennsylvania....
Book
25
Published 1839
Record Source: Published Materials
Subjects and Genres: '; ...Bridges Pennsylvania Philadelphia Schuylkill River....
Book
26
Published 1835
Record Source: Published Materials
Subjects and Genres: '; ...Bridges Pennsylvania Philadelphia....
Book
27
Record Source: Published Materials
Subjects and Genres: '; ...Pontoon bridges Pennsylvania Vandergraft...
28
Record Source: Published Materials
Subjects and Genres: '; ...Bridges Pennsylvania Oil City...
Book
29
Author: Hemminger, J. D.
Published 1905
Record Source: Published Materials
Subjects and Genres: '; ...Bridges Pennsylvania Cumberland County....
Microfilm
30
Author: Horst, Melvin J.
Published 1970
Record Source: Published Materials
Subjects and Genres: '; ...Bridges Pennsylvania....
Book
31
Author: Hemminger, J. D.
Published 1905
Record Source: Published Materials
Subjects and Genres: '; ...Bridges Pennsylvania Cumberland County....
Book
32
Author: Webster, George S. 1855-1931.
Published 1909
Record Source: Published Materials
Subjects and Genres: '; ...Bridges Pennsylvania Philadelphia Design and construction....
Book
33
Author: James, Arthur Edwin, 1897-1989.
Published 1976
Record Source: Published Materials
Subjects and Genres: '; ...Covered bridges Pennsylvania Chester County....
Book
34
Author: Ellet, Charles, 1810-1862.
Published 1843
Record Source: Published Materials
Subjects and Genres: '; ...Bridges Pennsylvania Philadelphia....
Book
35
36
Author: Milne, Donald.
Record Source: Published Materials
Subjects and Genres: '; ...Covered bridges Pennsylvania Somerset County....
Book
37
Record Source: Published Materials
Subjects and Genres: '; ...Bridges Pennsylvania Philadelphia....
Book
38
Record Source: Archival Materials
Subjects and Genres: '; ...Internal Improvements--Bridges--Pennsylvania Local sources...
Manuscript
39
Author: Waters, Bruce M.
Published 2010
Record Source: Published Materials
Subjects and Genres: '; ...Covered bridges Pennsylvania Lancaster County Pictorial works....
Book
40
Record Source: Published Materials
Subjects and Genres: '; ...Bridges Pennsylvania Columbia...