The date on "The Eastern Sentinel" is October 8, 1956. However, as this scene takes place the morning after Sam leaped into Arnold, the date should be October 9, 1956.
Though Zoey is a hologram invisible to others, she cast a shadow when she was using the hand link standing by the '57 Chevrolet.
The text of "The Eastern Sentinel" article refers to the recent election of U.S. President Bill Clinton and a speech that the Israeli Prime Minister Yitzhak Rabin gave to the U.N. Security Council about the Arab-Israeli conflict.
A jacket in Arnold and Jack's dorm room shows a Florida State University logo that wasn't in use until 1976.
This episode takes place in 1956. In the university library, Sam checks out "Prelude to Mars" (1965) by Arthur C. Clarke and "The Summer of Katya" (1983) by Rod Whitaker while Alia checks out "The Biological Time Bomb" (1968) by Gordon Rattray Taylor. Furthermore, "Daybreak" (1958) by Frank Slaughter, "The Forgotten Smile" (1961) by Margaret Kennedy, a 1970 directory, "Thirty-Four East" (1974) by Alfred Coppel, "Without Feathers" (1975) by Woody Allen, "The Limner" (1975) by Paul Darcy Boles, "Exploit of Death" (1983) by Anne Blaisdell and "Queenie" (1985) by Michael Korda can be seen on the shelves.