| Source: The Pageant and Masque of St. Louis registration cards, 1914 Location: St. Louis Pageant and Masque Records, Archives | |
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| Last Name: | Leffler |
| First Name: | Otto |
| Middle Name: | Francis |
| Address: | 3135a Pestalozzi St. |
| Birth Year: | 1884 |
| Source: The Pageant and Masque of St. Louis registration cards, 1914 Location: St. Louis Pageant and Masque Records, Archives | |
![]() | |
| Last Name: | Leffler |
| First Name: | Otto |
| Middle Name: | Francis |
| Address: | 3135a Pestalozzi St. |
| Birth Year: | 1884 |