One of the four PYREX Insulators
used by Commander Byrd on the antenna of the plane in which
the flight across the North Pole was made.
Commander MacMillan also relied
upon PYREX Insulators on his ship and plane while exploring
within the Arctic Circle.
WIDE WORLD PHOTO FROM A PAINTING BY
CHAS. ROSNER, N.Y.
The "City of New York" of the
Byrd Antarctic Expedition. The radio room, with PYREX
Entering and Stand-off Insulators in the ceiling, and
small PYREX Lead-in Insulators on the high-power
short-wave transmitter is shown on the outside front cover.