Golden Triangle (continued)

[Bapopik at AOL.COM]

    I've requested Peter Tamony's "Golden Triangle."
    This is from AMERICAN NICKNAMES (1955) by George Earlie Shankle, pg. 174:

_Golden Triangle_
     The main business section of Pittsburgh, Pa., located in the angle
formed by the confluence of the Allegheny and the Monongahela rivers which
unite to form the Ohio River, is commonly designated the _Point_.
     This area is also called the _Golden Triangle_(1) because the principal
wealth of the city including the stores, banks, theatres, and many other
business enterprises is centered here.
     (1) _The Source Book_ (Source Research Council, Inc. Chicago, 1936),
vol. 5, p. 2267.