[4] Ono originally went to dinner with Elliot Mintz, a family friend of the Lennons, and Norman Pattiz, the founder of Westwood One, where they were able to form the idea.

[3] Peeples and Kephart received the tapes in December 1987, and worked with a team of Westwood One engineers day and night to skim through and log hundreds of hours of material.

Mark Lewisohn, a Beatles historian, also worked on the project as the series' research consultant.

[7] The premiere episode, written by independent producer Bert Kleinman, features an introduction from John Lennon's wife, Yoko Ono, explaining why she chose to give Westwood One Radio access to the tapes on which the series' content is based.

[9] Lennon's creative process as a songwriter and recording artist was demonstrated as numerous songs were traced from early home demos to the actual studio productions, such as the solo hits "(Just Like) Starting Over", "Imagine", and "Strawberry Fields Forever" by The Beatles.