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| Petroleum Refining in Hartford, IL (2) | Retreat Houses in Hartford, IL (2) |
| Trucking Operator - Nonlocal in Hartford, IL (2) | Air Conditioning Contractors & Systems in Hartford, IL (1) |
| Aircraft Parts & Services in Hartford, IL (1) | Automobile Repairing & Service in Hartford, IL (1) |
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| Furniture Legs - Retail in Hartford, IL (1) | Gas - Ind & Medical - Cylinder & Bulk - Mfrs in Hartford, IL (1) |
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| Water & Sewage Companies - Utility in Hartford, IL (1) | Whol Petroleum Products Gasoline Service Station in Hartford, IL (1) |
| Wholesale Coal in Hartford, IL (1) |
