| Business | Phone |
| Donnair Aviation Inc 4601 Murvihill Rd, Valparaiso 46383 | (219) 548-8866 |
| Eagle Aircraft Inc 4001 Murvihill Rd, Valparaiso 46383 | (219) 464-0132 |
| Markette & Assoc Inc 4205 Murvihill Rd, Valparaiso 46383 | (219) 477-4041 |
| Murvihill Aero Svc 3902 Murvihill Rd, Valparaiso 46383 | (219) 462-6630 |