Books about Friendship -- Juvenile fiction (sorted alphabetically)
- Ned Garth; Or, Made Prisoner in Africa: A Tale of the Slave Trade William Henry Giles Kingston
- Ned in the Block-House: A Tale of Early Days in the West Edward Sylvester Ellis
- Nic Revel: A White Slave's Adventures in Alligator Land George Manville Fenn
- No Man's Island Herbert Strang
- Old comrades Agnes Giberne
- Old-Fashioned Girl Louisa May Alcott
- Old Pincushion; or, Aunt Clotilda's Guests Mrs. Molesworth
- On Guard: Mark Mallory's Celebration Upton Sinclair
- On the Irrawaddy: A Story of the First Burmese War G. A. Henty
- Orchard Secret Cleo F. Garis
- Oriel Window Mrs. Molesworth
- Our Davie Pepper Margaret Sidney
- Our Fellows; Or, Skirmishes with the Swamp Dragoons Harry Castlemon
- Pair of Them Evelyn Raymond
- Patty's Butterfly Days Carolyn Wells
- Patty's Friends Carolyn Wells
- Patty's Social Season Carolyn Wells
- Peck's Bad Boy in an airship George W. Peck
- Peggy-Alone Mary Agnes Byrne
- Peggy Parsons, a Hampton Freshman Annabel Sharp
- Peggy Parsons at Prep School Annabel Sharp
- Peggy Raymond's Way; Or, Blossom Time at Friendly Terrace Harriet L. Smith
- Penang Pirate John C. Hutcheson
- Penelope and the Others: Story of Five Country Children Amy Walton
- Percival's picture gallery A. L. O. E.