The logo printed on the reception invitation for the first graduates of the Psychological Warfare Officers Course, June 1950. “Quis Est Veritas?” is Latin for “What is Truth?”
https://arsof-history.org/articles/v7n2_rebuilding_psywar_page_1.html
https://arsof-history.org/articles/v7n2_rebuilding_psywar_page_2.html