| Business Name | Address | |
| Sumner Electric & Motor Svc | 209 N Railroad St Sumner, IA 50674 |
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| K & B Electric | 2767 165th St Sumner, IA 50674 |
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| Ollinger Electric Shop | 307 N Carpenter St Sumner, IA 50674 |
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| Minco Electric | 619 S Frederick Ave Oelwein, IA 50662 |
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| Stammeyer Electric | 1010 2nd Ave SE Oelwein, IA 50662 |
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