Basic Bakelite Lamp Holder I Vintage Edison Bulb Fitting – Light with Shade
Vintage Off/On Pull Chain Lamp Socket with Solid Metal Cast Shell, E26 Medium Base - royalLAMPSHADES
Leviton R50-08827-CW4 1-Piece Top Wired Lamp Holder with Pull Chain, 660 W, Incandescent/Fluorescent/CFL, Medium,White - Light Sockets - Amazon.com
Phenolic Medium Base Light Socket with Pull Chain Switch,3 Pack TWDRTDD Black Period Style E26 E27 Edison Retro Pendant Lamp Holder (Full Uno Thread and Ring) - Amazon.com
Amazon.com: UltraPro Porcelain Light Socket with Pull Chain Light Fixture, Light Bulb Socket, Medium Base, Indoor Lighting, Mount on 3-1/4” or 4” Box, 250VAC/660W, UL Listed, White, 18303 : Home & Kitchen