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4,314 items

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Definbaugh Scrapbook-028

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-029

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-030

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-031

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-032

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-033

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-034

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-035

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-036

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-037

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-038

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-039

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-040

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-041

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-042

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-043

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-044

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-045

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-046

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-047

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-048

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-049

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-050

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-051

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-052

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-053

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-054

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-055

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-056

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-057

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-058

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-059

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-060

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Definbaugh Scrapbook-061

Subject	Summerville -- school
Date	1950
Collection	Summerville Story Project

Delivering the Mail

Subject	mail delivery man horse and cart
Collection	Phil Bennett Collection

Demonstration of aircraft propeller

Subject	Airplane propellers Airplane engines Williamsport High School Adult Adult Evening School
Creator	Dauber, Carl J.
Date	1930-1940
Collection	Pennsylvania College of Technology - Williamsport Technical Institute

Desmids, Microsterus

Subject	Algae
Date	1886
Collection	Academy of Natural Sciences of Drexel University - Joseph Leidy Teaching Diagrams

Desmids, Xanthidium

Subject	Algae
Date	1886
Collection	Academy of Natural Sciences of Drexel University - Joseph Leidy Teaching Diagrams

Devils Elbow on the Allegheny River at Kinzua (circa 1940)

Subject	Illustrations -- Rivers -- Valleys
Creator	Unknown
Date	ca 1940
Collection	Warren Library Association - Historic Photographs

Diagram of a Blast Furnace

Subject	Civil engineering--Materials Cast iron--Blast furnaces Lantern slides
Creator	Wagner Free Institute of Science
Collection	Wagner Free Institute of Science - Engineering 1: The Materials of Engineering Construction

Diagram of a Furnace

Subject	Civil engineering--Materials Steel-works Blast furnaces Lantern slides
Creator	Wagner Free Institute of Science
Collection	Wagner Free Institute of Science - Engineering 1: The Materials of Engineering Construction

Diagrams of Machine Parts

Subject	Civil engineering--Materials Lantern slides
Creator	Wagner Free Institute of Science
Collection	Wagner Free Institute of Science - Engineering 1: The Materials of Engineering Construction

Diatoms

Subject	Algae
Date	1886
Collection	Academy of Natural Sciences of Drexel University - Joseph Leidy Teaching Diagrams

Diatoms

Subject	Algae
Date	1886
Collection	Academy of Natural Sciences of Drexel University - Joseph Leidy Teaching Diagrams

Diatoms, Pinnularia

Subject	Algae
Date	1886
Collection	Academy of Natural Sciences of Drexel University - Joseph Leidy Teaching Diagrams

Dickerson, Edward L. - Dillon, Lawrence S.

Subject	Beetles Diptera Lepidoptera
Creator	American Entomological Society
Date	1899-1940
Collection	Academy of Natural Sciences of Drexel University - American Entomological Society Correspondence

Dictyopodium trilobum

Subject	Protozoa
Collection	Academy of Natural Sciences of Drexel University - Joseph Leidy Teaching Diagrams

Diesel Building, Automotive Shops

Subject	Diesel Building Automotive Shops Cromar Building
Date	Circa 1965
Collection	Pennsylvania College of Technology - Williamsport Technical Institute

Difflugia urceolata

Subject	Protozoa
Creator	Leidy, Joseph, 1823-1891
Date	1887
Collection	Academy of Natural Sciences of Drexel University - Joseph Leidy Teaching Diagrams

Dimmock, George - Dod, Frederic Hova Wolley

Subject	Crane flies Diptera Hesperiidae Hymenoptera Lycaena Therevidae
Creator	American Entomological Society
Date	1879-1935
Collection	Academy of Natural Sciences of Drexel University - American Entomological Society Correspondence