- April 15, 19181
- April 19365
- April 19442
- April 19453
- April 19482
- April 19503
- April 19511
- April 19531
- April 20, 19231
- April 25, 19251
- April 29, 19181
- April, 19241
- April, 19251
- April, 19271
- April, 19282
- April, 19302
- April, 19311
- April, 19333
- April, 19411
- August 19343
