- Ice Cream & Frozen Yogurt, Big Bear Lake
- Indian Native American Arts & Crafts Retail, Big Bear Lake
- Indian Restaurants, Big Bear Lake
- Industrial & Commercial Cleaning Services & Companies, Big Bear Lake
- Industrial & Commercial Real Estate, Big Bear Lake
- Industrial & Heavy Equipment Repair & Service, Big Bear Lake
- Industrial Contractors, Big Bear Lake
- Industrial Equipment & Machinery, Big Bear Lake
- Industrial Goods & Products - Hard Goods - Large, Big Bear Lake
- Industrial Goods & Products - Hard Goods - Small, Big Bear Lake
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- Industrial Machinery Supplies & Equipment - Leasing & Rental, Big Bear Lake
- Industry, Big Bear Lake
- Information Technology Services, Big Bear Lake - IT Service
- Insurance Carriers, Big Bear Lake
- Insurance Farm, Big Bear Lake
- Interior Designers, Big Bear Lake
- Interior Designers & Decorators, Big Bear Lake
- Investment Management Services, Big Bear Lake
- Investment Services & Advisors, Big Bear Lake
- Italian Restaurants, Big Bear Lake
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