Periodicals 1,046,589
Poetry 336,188
Pictorial works 269,143
Private bills 223,930
Personal narratives 96,802
Photographs 59,452
Parts (Music) 52,440
Poésie 51,746
Poems 50,448
Portraits 50,001
Periodical 49,896
Printed ephemera 48,609
Personal correspondence 45,109
Piano music 34,738
Popular music 32,437
Publishers' advertisements 29,450
Partitions (Musique) 27,838
Popular works 26,285
Print 25,910
Périodiques 25,611
Prayers and devotions 24,453
Posters 22,663
Périodiques 19,187
Parts 19,182
Problems, exercises, etc 17,756
Psychological fiction 17,742
Plays 17,118
Pamphlets 15,488
Problems and exercises 10,781
Prayers 10,685
Popular Work 9,228
Photobooks 8,863
Personal narratives, American 8,065
Parties (Musique) 7,181
Personal Narrative 6,937
Partitions 6,902
Playbills 6,743
Photomechanical prints 6,654
Personal narratives, Jewish 6,650
Personal narratives, French 6,237
Publishers' cloth bindings (Binding) 6,187
Prospectuses 5,918
Picture books 5,833
Personal narratives, British 5,554
Photographic prints 5,512
Pre-Linnean works 5,339
Pastoral letters and charges 5,334
Parodies, imitations, etc 5,315
Personal narratives, German 5,219
Printed wrappers (Binding) 5,151
Preludes (Music) 5,120
Personal narratives, Russian 4,986
Promotional materials 4,924
Photograph 4,863
Phonograph records 4,712
Political fiction 4,559
Part songs 4,492
Pictorial cloth bindings (Binding) 4,464
Prescriptions, formulae, receipts, etc 4,444
Poésie 4,082
Prayer-books and devotions 4,074
Piano scores 4,027
Paraphrases, English 3,974
Pictures 3,936
Pictorial maps 3,877
Piano music, Arranged 3,692
Popular Works 3,587
Paraphrases 3,581
Piano trios 3,511
Personal zines 3,482
Programs 3,355
Patents 3,354
Private press books (Printing) 3,334
Personal narratives, Italian 3,328
Promptbooks 3,227
Personal narratives, Polish 3,198
Physical maps 3,165
Printers' devices (Printing) 3,109
Playing cards 3,023
Picture books for children 2,970
Protest literature 2,949
Postcards 2,769
Photograph albums 2,652
Partitions et parties 2,608
Psalms (Music) 2,599
Photography, Artistic 2,582
Publishers' catalogs 2,555
Partitions de chant 2,539
Paranormal fiction 2,464
Personal narratives, Confederate 2,444
Personal narratives, Japanese 2,434
Portrait prints 2,329
Platforms 2,282
Programmed instruction 2,234
Poster 2,206
Prophecies 2,196
Poems (texts) 2,183
Patterns 2,164
Polish 2,057
Pencil drawings 2,015