"They are all over the place, but Lehigh's is the best because Flynn did it. (We think it's Flynn)
Actually, it has certainly been there since at the very least the late 1940's but it is hard to be certain of its existence before the war due to the photograph angles available. The original map drawing file I have does not show it."
The 19th hole at Lehigh is visible in a 1938 aerial courtesy of the thin man in Washington, DC.