| Company | Category | Area | Address | Web | E-mail | Contact person |
| HDC DEVELOPMENT CO LLC | Construction Management | Minnesota | 1221 1ST ST NE, SARTELL, Stearns, Minnesota, 56377-2311, USA |
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Roger Holtberg |
| HDC EARLY HEAD START | Nursery School | Michigan | 1559 IMLAY CITY RD, LAPEER, Lapeer, Michigan, 48446-3175, USA |
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LISA LISA |
| HDC ENGINEERING | Consulting Engineer | Illinois | PO BOX 140, CHAMPAIGN, Champaign, Illinois, 61824-0140, USA |
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BILL SHERIDAN PE |
| HDC ENGINEERING | Consulting Engineer | Illinois | PO BOX 140, CHAMPAIGN, Coles, Illinois, 61824-0140, USA |
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MERLE INGERSOLL JR PE |
| HDC ENGINEERING | Engineers-Consulting | Illinois | PO BOX 140, CHAMPAIGN, Coles, Illinois, 61824-0140, USA |
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Aaron Thomas |
| HDC ENTERTAINMENT | Entertainment Bureaus | New York | 15 OAK ST, PATCHOGUE, Suffolk, New York, 11772-2809, USA |
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| HDC EQUITIES INC | Unclassified | Florida | 3400 ARABIAN CT, MELBOURNE, Brevard, Florida, 32934-8151, USA |
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Christophe Powers |
| HDC GIFTS | Ret Gifts/novelties | Ohio | 422 NORTON WAY, BUCYRUS, Crawford, Ohio, 44820-1845, USA |
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Howard Clark |
| HDC GROUP LLC | Mgmt Consulting | Florida | 695 SOLANO PRADO, CORAL GABLES, Miami-Dade, Florida, 33156-2373, USA |
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| HDC HOLDINGS INC | holding company | Texas | 6818 SNIDER PLZ, DALLAS, Dallas, Texas, 75205-1331, USA |
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Harold Cook |
