Electronic books 2,375 History 755 Periodicals 609 Electronic book 242 Documentary films 206 Television news programs 164 Congresses 151 Educational films 124 Conference papers and proceedings 118 Documentary television programs 117 Case studies 110 Statistics 80 Biography 79 Filmed speeches 72 Messages 61 Internet videos 59 Videorecording 51 Biographies 46 Interviews 37 Nonfiction films 35 Film clips 33 Nonfiction television programs 30 Feature films 29 Maps 18 Sources 18 Newsreels 14 Drama 13 Film excerpts 13 Filmed interviews 13 Panel discussions 13 Criticism, interpretation, etc 11 Cross-cultural studies 11 Documentary 11 Instructional films 11 Military history 11 Aufsatzsammlung 10 Handbooks, manuals, etc 9 Television interviews 9 Handbooks and manuals 8 Historical reenactments (Television programs) 8 Academic theses 7 Bibliography 7 Livres numériques 7 Short films 7 Unedited footage 7 Encyclopedias 6 Historical television programs 6 microform 6 videorecording 6 Biographical films 5 Dictionaries 5 Festschriften 5 Fiction films 5 Historical films 5 Television mini-series 5 Travelogues (Television programs) 5 Video recording 5 Congress 4 Diaries 4 Directories 4 Livres électroniques 4 Longitudinal studies 4 Pictorial works 4 Television series 4 Autobiographies 3 Environmental films 3 Geschiedenis (vorm) 3 Personal narratives 3 Reference works 3 Speeches 3 Television adaptations 3 Yearbooks 3 Anecdotes 2 Catalogs 2 Computer network resources 2 Congressen (vorm) 2 Correspondence 2 Educational television programs 2 Ethnographic films 2 Eulogies 2 Film adaptations 2 Filmed lectures 2 Filmed panel discussions 2 Juvenile literature 2 Kongress 2 Livres électronique 2 Local history 2 Naval history 2 Trials, litigation, etc 2 cartographic material 2 Atlases 1 Bibliographies 1 Bronnen (vorm) 1 Cases 1 Casestudies (vorm) 1 Census 1 Census, 1860 1 Church history 1 Coming-of-age films 1 Commercial treaties 1