National Refining Time Line1939 General offices, Hanna Building, Euclid and E. 14th,
Cleveland, Ohio As part of its marketing modernization program, National
adopts a new color scheme - ivory and green, instead of the yellow and
black long familiar at EN-AR-CO stations. The boy and slate signs will
be retained but dropped from the hanging signs to be replaced with new
square, ivory and green signs, hung at the
corner.
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