Source:500k-in-bonds
From Pittsburgh Streets
"$500,000 in bonds wanted: Important scheme afoot—proposition to build a free bridge across the Allegheny—Sixth avenue to rival Fifth—will the city act as generously as in the case of the Penn avenue improvement—great advantages to property, &c." Pittsburgh Gazette, Jan. 9, 1871, p. 1. Newspapers.com 85589437.
