Books about Man-woman relationships -- Fiction (sorted alphabetically)
- Princess Sonia Julia Magruder
- Prisoners: Fast Bound In Misery And Iron Mary Cholmondeley
- Professor Unrat, oder, Das Ende eines Tyrannen (German) Heinrich Mann
- Project Hi-Psi Frank Riley
- Proof of the Pudding Meredith Nicholson
- Proud Lady Neith Boyce
- Psyche Walter S. Cramp
- Queenie Hetherton Mary Jane Holmes
- Queen of the Dawn: A Love Tale of Old Egypt H. Rider Haggard
- Quest of the Golden Girl: A Romance Richard Le Gallienne
- Quickie Stephen Marlowe
- Quisanté Anthony Hope
- Rabok (Hungarian) Ferenc Molnár
- Raft Coningsby Dawson
- rat-trap Dolf Wyllarde
- Readjustment Will Irwin
- Real Adventure Henry Kitchell Webster
- reaping Mary Imlay Taylor
- Rebel of Valkyr Alfred Coppel
- Re-creations Grace Livingston Hill
- Redemption of Kenneth Galt Will N. Harben
- Red House on Rowan Street Lily A. Long
- Red Lily — Complete Anatole France
- Red Lily — Volume 01 Anatole France
- Red Lily — Volume 02 Anatole France