Lighting-Gallery.net - Decorative Incandescent Lamps/Philips Softone 40w lamps made in Spain
Botterweg Auctions Amsterdam > Philips. Gloeilampen, gloeilamparmaturen, "philora" lampen en armaturen, published by Philips Nederland bv Eindhoven, January 1964, Dutch text
Philips 1960s Cylindrical Pendant Lamp –Vintageinfo – All About Vintage Lighting
Catalogus Philips adviezen en voorbeelden 1964 | Lamp, Decor, Home decor
Catalogus Philips] - Goed licht in huis - ca 1965 - Arcana Cabana
Sold at Auction: Design lampadaire, Philips ontworpen door Louis Kalff + andere lampadaire