The following is a complete list of cartoons starring Oswald the Lucky Rabbit.
Walt Disney produced 26 cartoons during 1927–1928, 26 cartoons were produced after Walt Disney's departure during the Winkler years (1928–1929), and 142 cartoons were produced by Walter Lantz during 1929–1943, making 194 cartoons in total.
References
Oswald the Lucky Rabbit filmography Wikipedia(Text) CC BY-SA