| NAME | ADDRESS | OCCUPATION | SOURCE |
| Leffler, Ferdinand SOUNDEX Born in: United States (Illinois) |
134 Fulton | Laborer (Car Works: Pullman Palace Car Company ) | 1900 Federal Census |
| Leffler, Frank SOUNDEX Born in: United States (Illinois) |
134 Fulton | None | 1900 Federal Census |
| Leffler, Louis SOUNDEX Born in: United States (Illinois) |
134 Fulton | None | 1900 Federal Census |
| Leffler, Valentine SOUNDEX Born in: United States (Illinois) |
134 Fulton | None | 1900 Federal Census |
| LeFleur, William SOUNDEX Unknown |
16 Brickyard Cottages | Laborer | 1889 City Directory |