Concert in the Tuileries, 1860-62 (Notes at Artchive) OR Luncheon on the Grass, 1863 (some nudity; but arguably his most famous painting. Noteshere) .
2. The Old Musician, 1862
3. The Races at Longchamp, 1864
4. The Fifer, 1866
5. The Railway, 1872; NGA Lecture about this painting
6. Le Bar aux Folies-Bergère 1881-82; (Audio from Artchives; or YouTube video; not previewed).
Additional notes for further study here. More paintings here.