Pittsburgh, her advantageous position and great resources, as a manufacturing and commercial city embraced in a notice of sale of real estate - Gregg, O. Ormsby (Sold by Johnston & Stockton, 1845)
Cover title. - Goldsmiths'-Kress no. 34096.33. - OCLC, 18427154. - Reproduction of original from Kress Library of Business and Economics, Harvard University. - Signed on p. 37: O. Ormsby Gregg, Isaac Gregg, Moses F. Eaton