Books in Bestsellers, American, 1895-1923 (sorted alphabetically)
- Inside of the Cup — Complete Winston Churchill
- Inside of the Cup — Volume 01 Winston Churchill
- Inside of the Cup — Volume 02 Winston Churchill
- Inside of the Cup — Volume 03 Winston Churchill
- Inside of the Cup — Volume 04 Winston Churchill
- Inside of the Cup — Volume 05 Winston Churchill
- Inside of the Cup — Volume 06 Winston Churchill
- Inside of the Cup — Volume 07 Winston Churchill
- Inside of the Cup — Volume 08 Winston Churchill
- In the Bishop's Carriage Miriam Michelson
- In the Wilderness Robert Hichens
- Iron Woman Margaret Wade Campbell Deland
- Jaffery William John Locke
- Jane Cable George Barr McCutcheon
- Janice Meredith: A Story of the American Revolution Paul Leicester Ford
- Judgment House Gilbert Parker
- Jungle Upton Sinclair
- Jungle Upton Sinclair
- Just and the Unjust Vaughan Kester
- Just David Eleanor H. Porter
- K Mary Roberts Rinehart
- Kate Carnegie and Those Ministers Ian Maclaren
- Katrine: A Novel Elinor Macartney Lane
- Kindred of the Dust Peter B. Kyne
- Kingdom of Slender Swords Hallie Erminie Rives