| Industrial Equipment & Supplies | 446 |
| Industrial Equipment & Supplies- Repairing & | 446 |
| Service |
| Industrial Equipment & Supplies- Whsle | 446 |
| Inns | 446 |
| Insecticides | 446 |
| Insulation Contractors-Cold & Heat | 447 |
| Insulation Materials-Cold & Heat | 448 |
| Insulation Materials-Cold & Heat- Whsle | 449 |
| Insurance | 450 |
| Insurance-Annuities | 464 |
| Insurance-Automobile & Vehicle | 465 |
| Insurance Brokers | 467 |
| Insurance-Bond | 467 |
| Insurance-Burial | 467 |
| Insurance-Business & Commercial | 467 |
| Insurance Claim Processing Services | 468 |
| Insurance Consultants | 468 |
| Insurance-Credit-Life | 468 |
| Insurance-Dental | 468 |
| Insurance-Disability | 468 |
| Insurance-Dump Trucks | 468 |
| Insurance-Excess & Surplus | 469 |
| Insurance-Fire | 469 |
| Insurance-Flood | 469 |
| Insurance-General | 469 |
| Insurance-Group | 469 |
| Insurance-Health & Accident | 470 |
| Insurance-Homeowners | 471 |
| Insurance-Hospitalization, Medical & Surgical | 472 |
| Plans |
| Insurance Inspection & Audits | 473 |
| Insurance-Liability & Malpractice | 473 |
| Insurance-Life | 473 |
| Insurance-Long Term Care | 474 |
| Insurance-Marine | 474 |
| Insurance-Medicare Supplements | 474 |
| Insurance-Mobile Homes | 474 |
| Insurance-Motorcycle | 475 |
| Insurance-Property & Casualty | 475 |
| Insurance-Recreational Vehicle | 475 |
| Insurance-Renters | 475 |
| Insurance-Title | 475 |
| Insurance-Trucks-Commercial | 475 |
| Insurance Underwriters | 476 |
| Insurance-Worker’s Compensation | 476 |
| Intercom Systems & Services | 476 |
| Interior Decorators | 476 |
| Interior Decorators’ & Designers’ Supplies-Whsle | 476 |
| & Mfrs |
| Interior Designers | 476 |
| Internet Products & Services | 477 |
| Internet-Advertising | 477 |
| Internet-Consultants | 477 |
| Internet-Marketing Services | 477 |
| Internet-Service Providers | 478 |
| Inventors | 478 |
| Investigators | 478 |
| Investment Advisory Service | 478 |
| Investment Securities | 478 |
| Investments-Real Estate | 479 |
| Invitations & Announcements | 479 |
| Ironwork | 480 |
| Irrigation Consultants | 480 |
| Irrigation Systems & Equipment | 480 |
| Irrigation Systems-Repair & Service | 480 |