Feit Electric 60-Watt Equivalent T3 Spiral Non-Dimmable E26 Medium Base CFL Compact Fluorescent Light Bulb, Soft White 2700K (48-Pack) ESL13T/12/4 - The Home Depot
Swap Your Conventional Light Bulbs for LEDs at No Charge! | Sustainability | Washington University in St. Louis
Fluorescent Bulb, 105W - 2-Pack | Fovitec USA
History of Interior Lighting: The Fluorescent Lightbulb | Sculpta Lights
Xtricity Compact Fluorescent Light Bulbs T2 Spiral CFL, 5000k Daylight, 13W (60 Watt Equivalent), 900 Lumens, E26 Medium Base, 120V, UL Listed (Pack of 8) - Amazon.com