Southwire 500-Watt EQ T10 Bright White Linear Spot Halogen Light Bulb in the Halogen Light Bulbs department at Lowes.com
Feit Electric 500-Watt Equivalent Corn Cob E26 with E39 Mogul Adapter High Lumen HID Utility LED Light Bulb Daylight (5000K) (1-Bulb) C10000/5K/LEDG3/HDRP - The Home Depot
Set of 3 1950's Amplex 500 watt Light Bulbs Tested & Work Unused NOS Old Stock | eBay