Gateways to the Mind is about what the five senses are and how they work. It was produced and directed by Owen Crump. The screenplay was by Henry F. Greenberg, a television screenwriter who was active in the 1950s and 60s. In addition to Dr. Baxter, it starred Wilder Penfield and Hadley Cantrell, with actor Karl Swenson playing the role of a cameraman (the program was set on a soundstage in a mock "behind-the-scenes" format). Chuck Jones directed the animation, which was designed by Maurice Noble. In 1966, Jones won an Academy Award for Best Animated Short Film for directing The Dot and the Line: A Romance in Lower Mathematics

The Alphabet Conspiracy examines language and its history. The screenplay was written by Leo Salkin and Richard Hobson. Salkin had worked for UPA (the firm that produced animations for Our Mr. Sun) both as an animator and as the writer for numerous cartoon shorts. The screenplay uses characters from Lewis Carroll's Alice in Wonderland. It was directed by Robert B. Sinclair, who had worked on numerous films and television programs. The cast included Cheryl Callaway (as Judy), Stanley Adams (as the theatrical agent), and Hans Conried (as the Mad Hatter). Daws Butler (uncredited) voiced several characters. The animated sequences were directed by Friz Freleng, who subsequently won the Academy Award for Best Animated Short Film for directing The Pink Phink

AT&T and N. W. Ayer were apparently somewhat dissatisfied with the first two Warner films, and unsuccessfully approached Capra about bidding on production of Thread of Life and About Time. Thread of Life is about heredity, DNA and how it works. The screenplay was by Rowland Barber, a writer perhaps best known for the 1960 novel The Night They Raided Minsky's. Owen Crump directed; Robert McKimson directed the animation.

About Time examines time. The screenplay was written by Richard Hobson, Nancy Pitt, and Leo Salkin. Owen Crump directed, with Phil Monroe directing the animations. The film starred Richard Deacon and Les Tremayne and featured Richard Feynman who was used as a consultant