History 29,104 Designs and plans 12,244 Architectural drawings 9,282 Exhibitions 9,113 Pictorial works 8,071 Catalogs 7,152 Exhibition catalogs 6,303 Periodicals 5,963 Guidebooks 5,379 Congresses 4,525 Early works to 1800 4,267 Biography 3,503 Criticism, interpretation, etc 3,338 Conference papers and proceedings 3,159 Electronic books 2,789 Biographies 2,331 Bibliography 2,125 Orthographic drawings 2,015 Detail drawings 1,835 Illustrated works 1,806 Pencil drawings 1,683 Early works 1,630 Dictionaries 1,424 Ink drawings 1,305 Interviews 1,233 Expositions 1,068 Bibliographies 853 Elevations 772 Handbooks, manuals, etc 750 Sections 737 Dessins et plans 714 Floor plans 697 Ouvrages illustrés 617 Engravings 585 Blueprints 578 Sources 560 Perspective views (images) 537 Sketches 527 Video recordings 522 Academic theses 516 Internet videos 507 Documentary films 499 Bildband 490 Catalogues 459 Handbooks and manuals 457 In art 433 Books 423 Photographs 414 Maps 410 Case studies 409 Perspective drawings 390 Directories 384 Catalogues raisonnés 382 exhibition catalogs 376 Congrès 375 Theses 373 Catalogues d'exposition 372 Catalogues raisonnés 372 publications 368 Plans (drawings) 367 Thèses et écrits académiques 331 Writings 319 Essays 312 Guides 307 Aufsatzsammlung 295 Festschriften 290 Site plans 282 Art 267 Legislative materials 267 Périodiques 266 Renderings 247 Crayon drawings 244 Terminology 240 Notebooks, sketchbooks, etc 237 Trade catalogs 236 illustrated books 232 Drawings 231 Guides touristiques 225 travel guidebooks 224 architectural drawings (visual works) 223 Views 221 Sketch-books 214 Local history 211 Tours 207 catalogs (documents) 206 Educational films 200 Ornament drawings 197 Preliminary drawings 197 Electronic journals 195 Indexes 194 Plans 193 Correspondence 185 Watercolor wash drawings 182 Viewbooks 181 Exterior elevations 179 Longitudinal sections 179 Academic Dissertation 173 dissertations 172 Quotations (texts) 170 Sketchbooks 168