Original 1943 electrical trade vintage ad for OKONITE-CALLENDER CABLE COMPANY.  (Hazard Insulated Wire Works Division). The Main office and plant was located in Passaic, NJ.

Manufacturers of Paper Insulated Wire Cables.

Insulation Stability at High Temperature with Metallized Paper Tapes.

Today's heavy loads on power cables develop temperatures that will hasten deterioration of the insulation unless the proper safeguards are incorporated. Studies made in the Okonite-Callender Research Laboratories had shown that one of the big factors in the deterioration of oil-impregnated paper-insulated cables  is the effect of the metal in contact with the oil. Copper especially has a very pronounced reaction.

Unbound from a 1943 electrical engineering magazine, this unique old one-page advertisement would display beautifully matted and framed. Nice graphics. World War 2 propaganda. A fabulous addition to your retro electrical library.