| date | publisher | title | issue | x |
|---|---|---|---|---|
| 4/30/1939 | National | New York World's Fair Comics | 1 | Sandman • Slam Bradley • Superman |
| 5/11/1940 | National | New York World's Fair Comics | 2 | Batman & Robin • Hourman • Johnny Thunderbolt • Sandman • Slam Bradley • Superman • Zatara |