| Ice Making Equipment & Machines | 466 |
| Ice Making Equipment & Machines-Renting | 466 |
| Ice Making Equipment & Machines-Repairing & | 466 |
| Service |
| Ice-Dry | 466 |
| Ice-Mfrs | 466 |
| Ice-Whsle | 466 |
| Identification Card Service | 466 |
| Imaging Equipment & Supplies | 466 |
| Imaging Services | 467 |
| Immigration & Naturalization Consultants | 467 |
| Importers | 467 |
| Importers-Clothing | 467 |
| Importers-Jewelry | 467 |
| Importing-General | 467 |
| Incentive Programs | 467 |
| Incinerators | 467 |
| Industrial Consultants | 467 |
| Industrial Developments | 467 |
| Industrial Equipment & Supplies | 467 |
| Industrial Equipment & Supplies- Repairing & | 468 |
| Service |
| Industrial Equipment & Supplies- Whsle | 468 |
| Industrial Equipment & Supplies-Mfrs | 468 |
| Industrial Hygiene Consultants | 468 |
| Information Bureaus | 468 |
| Information Processing & Retrieval Systems & | 468 |
| Services |
| Infrared Inspection Services | 468 |
| Inns | 468 |
| Insect Control Devices | 468 |
| Insecticides | 468 |
| Inspection Bureaus | 468 |
| Inspection Devices-Industrial | 468 |
| Insulation Contractors-Cold & Heat | 469 |
| Insulation Materials-Cold & Heat | 470 |
| Insulation Materials-Cold & Heat- Whsle | 470 |
| Insurance | 470 |
| Insurance-Annuities | 484 |
| Insurance-Automobile & Vehicle | 485 |
| Insurance Brokers | 486 |
| Insurance-Bond | 486 |
| Insurance-Burial | 486 |
| Insurance-Business & Commercial | 487 |
| Insurance Claim Processing Services | 488 |
| Insurance Consultants | 488 |
| Insurance-Casualty | 488 |
| Insurance-Dental | 488 |
| Insurance-Disability | 488 |
| Insurance-Excess & Surplus | 488 |
| Insurance-Flood | 489 |
| Insurance-General | 489 |
| Insurance-Group | 489 |
| Insurance-Health & Accident | 490 |
| Insurance-Homeowners | 491 |
| Insurance Inspection & Audits | 492 |
| Insurance-Hospitalization, Medical & Surgical | 492 |
| Plans |
| Insurance-Liability & Malpractice | 492 |
| Insurance-Life | 492 |
| Insurance-Long Term Care | 493 |
| Insurance-Marine | 493 |
| Insurance Reporters | 494 |
| Insurance Schools | 494 |
| Insurance-Medicare Supplements | 494 |
| Insurance-Mobile Homes | 494 |
| Insurance-Mortgage | 494 |
| Insurance-Motorcycle | 494 |
| Insurance-Personal | 494 |