SOXLED LED replacement for LPS and SOX lamps | Magnatech LED
Lighting-Gallery.net - Lanterns and Fittings/IKEA uplighter with SOX lamp
soxlamps.org: low-pressure sodium lamps
SOX lamps: low-pressure sodium lamps
Philips 35W SOX - Bayonet Cap - Lyco
LED BY22D SOX 35w Retrofit Kit with 20w LED Lamp and Meanwell Driver 4000k | eBay
File:SOX lamps (not my image) - Coppermine - 19716.jpg - Roader's Digest: The SABRE Wiki
LPSX - INDO Lighting
Thorn EMI SOX/H 6W
Philips SOX Compact 18W
Low pressure sodium SOX lamp lit showing the deep orange monochromatic light the lamps emit which causes objects to be rendered without colour Stock Photo - Alamy