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Type

Archival Object 478530

Collection 1802

Repository 3

 

Subject

Correspondence 280

Railroads 127

Advertisements 119

Gunpowder industry 96

Social history 95

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Chemical industry 86

Exhibitions 74

Explosives industry 73

Financial statements 67

Textile industry 60

Patents 54

Steel industry and trade 53

Ephemera 51

Research, Industrial 51

Textile fibers, Synthetic 51

Account books 50

Reports 48

Photograph albums 44

Portraits 44

Diaries 43

Exhibition buildings 43

Iron industry and trade 43

Scrapbooks 43

Aeronautics 41

World War, 1939-1945 41

Electronic industries 40

Minutes 39

Construction projects 37

Factories 37

Postcards 37

Ships 37

Domestic relations 36

Industrial design 36

Group portraits 34

Inventors 34

Marketing 34

Wilmington, Del. 34

Du Pont family -- Homes and haunts 33

Industrial chemists 33

Oral histories 33

Railroads -- Rolling stock 31

Television 31

Automobile industry and trade 30

Biography 30

Panoramic photographs 30

Technical drawings 30

Genealogies 29

Testing laboratories 29

Industrial safety 28

Papermaking 27

Planographic prints 27

Sales promotion 27

Dyes and dyeing 26

Merchants 26

Powder mills 26

Weapons industry -- Employees 26

Investments 25

Trade associations 25

Blast furnaces 24

Coal mines and mining 24

Gunpowder, Smokeless 24

Railroad stations 24

Textile factories 24

World War, 1914-1918 24

Aerial photographs 22

Maps 22

Packaging -- Design 22

Posters 22

Speeches 22

Wages 22

Business and politics 21

Chemical plants 21

Computer industry 21

Industrial films 21

Pennsylvania 21

Receipts (Financial records) 21

Computer storage devices 20

Electric industries 20

United States -- History -- Civil War, 1861-1865 20

Banks and banking 19

Employees' magazines, newsletters, etc. 19

Gardens 19

Industrial housing 19

Iron and steel workers 19

Mechanical engineering 19

Philadelphia (Pa.) 19

Public relations 19

Steel-works 19

Vacuum-tubes 19

Education 18

Industrial relations 18

Laboratory notebooks 18

Nylon 18

Printing industry 18

Railroads -- Buildings and structures 18

Railroads -- Rolling stock -- Design and construction 18

Stores, Retail 18

Commerce 17

Cotton manufacture 17

Finishes and finishing 17

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