Periodicals 1,047,104 Poetry 336,889 Pictorial works 269,650 Private bills 223,930 Personal narratives 96,959 Photographs 59,614 Parts (Music) 52,529 Poésie 51,590 Poems 50,525 Portraits 50,063 Periodical 49,733 Printed ephemera 48,609 Personal correspondence 45,183 Piano music 34,739 Popular music 32,919 Publishers' advertisements 29,476 Partitions (Musique) 27,880 Popular works 26,315 Print 25,911 Prayers and devotions 24,499 Périodiques 23,256 Posters 22,682 Périodiques 21,365 Parts 19,188 Problems, exercises, etc 17,771 Psychological fiction 17,754 Plays 17,129 Pamphlets 15,543 Problems and exercises 10,774 Prayers 10,688 Popular Work 9,231 Photobooks 8,939 Personal narratives, American 8,069 Parties (Musique) 7,204 Partitions 7,012 Personal Narrative 6,911 Playbills 6,744 Personal narratives, Jewish 6,659 Photomechanical prints 6,654 Personal narratives, French 6,238 Publishers' cloth bindings (Binding) 6,192 Prospectuses 5,922 Picture books 5,885 Personal narratives, British 5,553 Photographic prints 5,514 Pastoral letters and charges 5,355 Pre-Linnean works 5,343 Parodies, imitations, etc 5,324 Personal narratives, German 5,220 Printed wrappers (Binding) 5,159 Preludes (Music) 5,120 Personal narratives, Russian 4,994 Promotional materials 4,947 Photograph 4,862 Phonograph records 4,712 Political fiction 4,568 Part songs 4,496 Pictorial cloth bindings (Binding) 4,468 Prescriptions, formulae, receipts, etc 4,453 Poésie 4,151 Prayer-books and devotions 4,074 Piano scores 4,034 Paraphrases, English 3,976 Pictures 3,933 Pictorial maps 3,878 Piano music, Arranged 3,693 Paraphrases 3,586 Popular Works 3,586 Piano trios 3,511 Personal zines 3,492 Private press books (Printing) 3,365 Programs 3,357 Patents 3,355 Personal narratives, Italian 3,332 Promptbooks 3,233 Personal narratives, Polish 3,199 Physical maps 3,167 Printers' devices (Printing) 3,112 Playing cards 3,042 Picture books for children 2,982 Protest literature 2,955 Postcards 2,791 Photograph albums 2,661 Partitions et parties 2,634 Psalms (Music) 2,603 Photography, Artistic 2,585 Publishers' catalogs 2,564 Partitions de chant 2,522 Paranormal fiction 2,475 Personal narratives, Confederate 2,444 Personal narratives, Japanese 2,433 Portrait prints 2,329 Platforms 2,288 Programmed instruction 2,234 Poster 2,206 Prophecies 2,195 Poems (texts) 2,173 Patterns 2,167 Polish 2,062 Pencil drawings 2,015