Complex sentence: While working at the Sunwise Turn, he met several authors and future business partners, including F. Scott Fitzgerald, Laurence Vail, Malcolm Cowley, and his future business partners Alfred Kreymborg and Lola Ridge.
Split into simpler sentences: While working at the Sunwise Turn, he met several authors including F. Scott Fitzgerald, Laurence Vail, Malcolm Cowley. He also met his future business partners Alfred Kreymborg and Lola Ridge.