Periodicals 355,141 Pamphlets 69,246 Pictorial works 58,786 Poetry 46,457 Périodiques 18,179 Personal narratives 17,546 Popular works 15,358 Picture books 13,838 Problems, exercises, etc 13,231 Psychological fiction 10,013 Parts 9,105 Presidential Communications and Messages 8,585 Poems 7,984 Portraits 7,620 Patterns 7,195 Periodical 5,642 Popular Works 5,246 Prayers and devotions 5,194 Picture books for children 4,916 Parts (Music) 4,558 Problems and exercises 4,335 Pamphlet files 4,310 Plays 3,669 Personal narratives, American 3,389 Publishers' advertisements 3,108 Paranormal fiction 3,051 Popular music 2,974 Posters 2,841 Périodiques 2,668 Personal correspondence 2,572 Political fiction 2,325 Périodique électronique (Descripteur de forme) 1,960 Popular Work 1,897 Pictorial maps 1,841 Prospectuses 1,713 Prayer-books and devotions 1,674 Pastoral letters and charges 1,613 Personal Narratives 1,418 Programmed instruction 1,275 Parodies, imitations, etc 1,234 Personal narratives, Confederate 1,215 Photographs 1,204 Paraphrases, English 1,144 Prayers 1,132 Physical maps 1,105 Printed waste (Binding) 1,047 Pop-up books 1,022 Problems and Exercises 998 Printed ephemera 914 Patents 909 Personal narratives, German 890 Psalters 886 Pre-Linnean works 862 Political and Social Activism Pamphlet Collection 825 Personal narratives, Russian 823 Personal narratives, British 804 Personal narratives, French 788 Preludes (Music) 717 PDF 714 Penny dreadfuls 681 Personal Narrative 678 Programmed instructional materials 623 Piano scores 622 Paranormal romance stories 614 Papal documents 578 Publishers' cloth bindings (Binding) 577 Practice Guideline 536 Percival Bailey Collection 535 Problèmes et exercices 478 Plays (Performed Works) 474 Photobooks 468 Printers' advertisements 460 Programmed Instruction 433 Picture books collection 422 Personal narratives, English 386 Photomechanical prints 381 Primers (Instructional books) 377 Publishers' catalogues 368 Printed wrappers (Binding) 367 Psalms (Music) 365 Pastoral fiction 359 Patient Education Handout 354 Pictorial bindings (Binding) 346 Pictorial cloth bindings (Binding) 346 Paraphrases 343 Parts (solo) 342 Presentation inscriptions (Provenance) 341 Personal narratives, Jewish 340 Playbills 334 Partitions 326 Personal narratives, Polish 319 Publishers' bindings (Binding) 314 Prayer books 307 Puzzles and games 307 Piano music 285 Part songs 282 Photographs from space 282 Photography, Artistic 281 Printed books 278 Prophecies 277