U.S. District Court for the Eastern (Chicago) Division of the Northern District of Illinois. 3/3/1905-.Transcript of Proceedings. — 1984-04-05. — (File Unit: Karen Frances Ulane v. Eastern Airlines, Inc., Frank Borman, Thomas R. Buttion, David P. Millett, and Robert Shipner, 1981-1986, 1981 - 1986). Архивировано 23 марта 2019 года.
U.S. District Court for the Eastern (Chicago) Division of the Northern District of Illinois. 3/3/1905-.Exhibit, Termination Letter #1. — 1981-04-24. — (File Unit: Karen Frances Ulane v. Eastern Airlines, Inc., Frank Borman, Thomas R. Buttion, David P. Millett, and Robert Shipner, 1981-1986, 1981 - 1986). Архивировано 23 марта 2019 года.
U.S. District Court for the Eastern (Chicago) Division of the Northern District of Illinois. 3/3/1905-.Transcript of Proceedings. — 1984-04-05. — (File Unit: Karen Frances Ulane v. Eastern Airlines, Inc., Frank Borman, Thomas R. Buttion, David P. Millett, and Robert Shipner, 1981-1986, 1981 - 1986). Архивировано 23 марта 2019 года.
U.S. District Court for the Eastern (Chicago) Division of the Northern District of Illinois. 3/3/1905-.Exhibit, Termination Letter #1. — 1981-04-24. — (File Unit: Karen Frances Ulane v. Eastern Airlines, Inc., Frank Borman, Thomas R. Buttion, David P. Millett, and Robert Shipner, 1981-1986, 1981 - 1986). Архивировано 23 марта 2019 года.