| Type | Title | Year | Publisher |
|---|---|---|---|
| Vending Machine | 🟩 Improved Vending Machine | 1889 | O'Meara, John U. [Washigton, DC, USA] |
| Vending Machine | 🟩 Improved Vending Machine | 1890 | O'Meara, John U. [Washigton, DC, USA] |
| Vending Machine | 🟩 Vending Machine | 1889 | O'Meara, John U. [Washigton, DC, USA] |