History 29,173 Designs and plans 12,272 Architectural drawings 9,309 Exhibitions 9,116 Pictorial works 8,103 Catalogs 7,067 Exhibition catalogs 6,327 Periodicals 5,970 Guidebooks 5,390 Congresses 4,536 Early works to 1800 4,272 Biography 3,516 Criticism, interpretation, etc 3,331 Conference papers and proceedings 3,164 Electronic books 2,746 Biographies 2,340 Bibliography 2,124 Orthographic drawings 2,015 Detail drawings 1,835 Illustrated works 1,821 Pencil drawings 1,683 Early works 1,632 Dictionaries 1,423 Ink drawings 1,305 Interviews 1,238 Expositions 1,083 Bibliographies 857 Elevations 772 Handbooks, manuals, etc 751 Sections 737 Dessins et plans 733 Floor plans 697 Ouvrages illustrés 628 Engravings 586 Blueprints 578 Sources 567 Perspective views (images) 537 Sketches 527 Video recordings 525 Academic theses 523 Internet videos 508 Documentary films 501 Bildband 492 Catalogues 459 Handbooks and manuals 459 In art 433 Books 423 Photographs 416 Case studies 410 Maps 410 Perspective drawings 390 Congrès 388 Directories 386 Catalogues raisonnés 384 Catalogues raisonnés 374 exhibition catalogs 374 Theses 371 Catalogues d'exposition 370 Plans (drawings) 367 publications 365 Thèses et écrits académiques 336 Guides 320 Writings 319 Essays 316 Aufsatzsammlung 294 Festschriften 291 Site plans 282 Art 269 Legislative materials 267 Périodiques 252 Renderings 247 Crayon drawings 244 Terminology 242 Notebooks, sketchbooks, etc 238 Trade catalogs 236 Drawings 234 Electronic journals 229 illustrated books 227 architectural drawings (visual works) 226 Guides touristiques 223 travel guidebooks 222 Views 221 Local history 218 Sketch-books 214 Tours 207 Educational films 200 Ornament drawings 197 Preliminary drawings 197 catalogs (documents) 197 Indexes 195 Plans 193 Correspondence 186 Watercolor wash drawings 182 Viewbooks 181 Exterior elevations 179 Longitudinal sections 179 Academic Dissertation 178 Sketchbooks 172 dissertations 172 Congrès 167