1
Author: Seitz, Ruth Hoover.
Published 1993
Record Source: Published Materials
Subjects and Genres: '; ...Natural history Penn....
Book
2
Author: Rupp, I. Daniel 1803-1878.
Published 1844
Record Source: Published Materials
Subjects and Genres: '; ...Natural history Penn. Lancaster Co....
Book
3
4
Author: Mombert, J. I. 1829-1913.
Published 1869
Record Source: Published Materials
Subjects and Genres: '; ...Natural history Penn. Lancaster Co....
Microfilm
5
Author: Davis, W. W. H. 1820-1910.
Published 1905
Record Source: Published Materials
Subjects and Genres: '; ...Natural history Penn. Bucks Co....
Microfilm
6
7
Author: Mombert, J. I. 1829-1913.
Published 1869
Record Source: Published Materials
Subjects and Genres: '; ...Natural history Penn. Lancaster Co....
Book
8
Published 1986
Record Source: Published Materials
Subjects and Genres: '; ...Natural history Delaware River Valley (N.Y.-Del. and N.J.) Guidebooks....
Book
9
Author: Marvel, William W. 1920-
Published 1972
Record Source: Published Materials
Subjects and Genres: '; ...Natural history museums Penn. Philadelphia....
Book
10
Published 1873
Record Source: Published Materials
Subjects and Genres: '; ...Natural history museums Penn. Philadelphia....
Book
11
Published 1966
Record Source: Published Materials
Subjects and Genres: '; ...Natural history museums Penn. Philadelphia....
Book
12
Published 1924
Record Source: Published Materials
Subjects and Genres: '; ...Natural history museums Penn. Philadelphia By-laws....
Book
13
Author: Weygandt, Cornelius, 1871-1957.
Published 1930
Record Source: Published Materials
Subjects and Genres: '; ...Natural history Penn. Wissahickon Creek Valley....
Book
14
Author: Linton, M. Albert 1887-1966.
Published 1962
Record Source: Published Materials
Subjects and Genres: '; ...Natural history museums Penn. Philadelphia History....
Book
15
Author: Nolan, Edward James, 1846-1921.
Published 1909
Record Source: Published Materials
Subjects and Genres: '; ...Natural history museums Penn. Philadelphia History....
Book
16
Author: Peale, Titian Ramsay, 1799-1885.
Published 1831
Record Source: Published Materials
Subjects and Genres: '; ...Natural history museums Penn....
Book
17
Author: Klein, Calvin J.
Published 1983
Record Source: Published Materials
Subjects and Genres: '; ...Natural history Penn. Pennypack Creek Watershed....
Book
18
Author: Haltman, Kenneth.
Published 1991
Record Source: Published Materials
Subjects and Genres: '; ...Natural history illustrators Penn. Philadelphia....
Book
19
Author: Oplinger, Carl S., 1936-
Published 1988
Record Source: Published Materials
Subjects and Genres: '; ...Natural history Penn. Pocono Mountains Guidebooks....
Book
20
Published 1915
Record Source: Published Materials
Subjects and Genres: '; ...Natural history museums Penn. Philadelphia....
Book