E26 E27 Medium Base Ceramic Lampholder Socket - Porcelain - 660W-250V Maximum - Walmart.com
UltraPro Porcelain Lampholder with Outlet and Pull Chain, 2 Pack, Medium Base, Grounded Plug, Indoor Lighting, 3-Prong, Mount on 3-1/4” or 4” Box, UL Listed, White, 54601 - Amazon.com
Leviton White Porcelain Incandescent Keyless Lampholder - Parker's Building Supply
E26 E27 Medium Base Ceramic Lampholder Socket - Porcelain - 660W-250V Maximum - Walmart.com
E39 Mogul Base Socket | White Porcelain Socket Base
Leviton White Porcelain Incandescent Lampholder with Pull Chain - Parker's Building Supply
274 Legrand-Pass & Seymour Porcelain Keyless Lampholder 4 Term
Amazon.com: UltraPro Porcelain Light Socket with Outlet and Pull Chain Light Fixture, Light Bulb Socket, Medium Base, Grounded Plug, Indoor Lighting, Mount on 3-1/4” or 4” Box, UL Listed, White, 18305,1-Pack :
GE White Porcelain Lamp Holder with Pull Chain at Menards®