His Anaximander and the origins of Greek cosmology, 1960 title page (Charles H. Kahn)
Wikipedia (viewed 28 October 2020) Charles Kahn (Charles H. Kahn is a classicist, professor emeritus of philosophy at the University of Pennsylvania. His work is focused on early Greek philosophy, up to the times of Plato) work (Charles H. Kahn presented in 1965 to the Society for Ancient Greek Philosophy at its meeting with the Eastern Division of the American Philosophical Association a notable work under the title “The Greek Verb ‘To Be’ and the Problem of Being”. It was printed the following year in Foundations of Language, and became the topic of a book published in 1973 and reprinted later. He also wrote historical studies on Anaximander and the Pythagoreans. A collection of his various essays has been published by the Oxford University Press in 2009) https://en.wikipedia.org/wiki/Charles_Kahn