Share via Share via... Twitter LinkedIn Facebook Pinterest Telegram WhatsApp Yammer Reddit TeamsRecent ChangesSend via e-MailPrintPermalink × This is an old revision of the document! PHP's gd library is missing or unable to create PNG images Sunday February, 13: The Winifred Asprey Lecture Series in Computer Science: Miss Asprey, Vassar Computer Science, & APL: A Historical Perspective apl_2019-2-13_ray_polivka_morten_kromberg_11x17_flyer.pdf