Inside front cover.
First and second printing: Black and white advertisement, $499 price, woman at computer as others look on, title is "Radio Shack TRS-80 Network I", with the subtitle "It's the magic way to bring your class together".
Third printing: Black and white advertisement with blue and red highlights, $499 price, same drawing as first and second printings with windows and flag added, title is "More TRS-80 magic - Radio Shack's Network I brings your class together".
The "prologue" page is not a true prologue, and is not included in the page numbering of the main story. It is also not used as a prologue, but rather as a "back cover" illustration, in the reprints inserted into some July 1980 DC comics.
There are three printings of this comic. The third printing removes the word "prologue" and the introductory narative text (the first line in the third printing is "Our TRS-80 computer answers check!").
The advertisement on this page is identical in all three printings.
First printing: The advertisement in this printing has not yet been visually verfied.
Second and third printing: Black and white advertisement, photo of boy in chair, says "Last year this boy got into computing with a Radio Shack TRS-80".
First printing: Shows teacher and students, says "The Funway to learn about Science!". Thumbnails of "Science Fair Story of Electronics: The U.S. NASA Space Telescope" and "Superman in The Computers That Saved Metropolis".
Second and third printing: Thumbnail of "Science Fair Story of Electronics: U.S. Voyager I", coupons for "More copies Story of Electronics", "Get free batteries", and "$1 gift certificate".
Inside back cover.
First printing: Black and white advertisement, says "Science Fair 50-in-1 Electronic Project Kit", batteries, multitester, solar cell.
Second and third printing: Says "150-in-1 Electronic Project Kit", orange background.
Back cover.
First and second printing: Says "Free exciting new teaching aids!" in red and black text, purple and orange background, picture of teacher and young girl. Thumbnails of "Superman in The Computers That Saved Metropolis", "TRS-80 Microcomputer Source-Book for Educators", and "My TRS-80 Likes Me".
Third printing: Says "Free exciting new teaching aids" in blue text. Black and white text adverstisement, yellow background. Black and white thumbnails of "Superman in The Computers That Saved Metropolis", "TRS-80 Microcomputer Sourcebook for Educators", and "My TRS-80 Likes Me".