Public domain
William J. Smith, President, Standard Oil Co., of Kentucky, & W.T. Holliday, President, Standard Oil of Ohio
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineWilliam J. Smith, President, Standard Oil Co., of Kentucky, & W.T. Holliday, President, Standard Oil of Ohio. 1939-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.