T. Jørstian, P. E. Munk Nielsen, "Light Years Ahead: The Story of the PH Lamp", Editions Louis Poulsen, Copenhagen, 1994. Exemplaires similaires reproduits pp. 241-242.
Commentaire :
A RARE COPPER AND BRASS PH4½/4 PENDANT LAMP BY POUL HENNINGSEN FOR LOUIS POULSEN - CIRCA 1931 26.38 × 16.73 in.