The Galileo 7
Star Trek: The Galileo 7 was an adaptation of stills taken from the  first season episode  into a photonovel, and, appropriately, the seventh release in the series. Aside from an episode cast list, the book also included excerpts from reader's letters. 

This was the first outing of the series of which no internationally translated editions are known to exist.

Summary
From the back cover
Lost in space! Whirled onto the heart of the electronic denon known as Murasaki 312! Is this the end for Spock, Scott and McCoy?

The authentic re-creation of an astounding voyage of the starship Enterprise...Over 300 action photographs from the episode The Galileo 7 in the television series created by Gene Roddenberry.

Background information 
Exports to the UK had the British prices – either 95p or £1.25/1.50 – stamped on the back cover. 
This was the last of Bantam Books' Star Trek photonovel releases to see a regular – as the license status of the contemporary Indonesian releases is unclear  – internationally-translated edition. Unlike the previous six titles though, the only known such release this time around concerned a Latin-American edition, translated by Ileana R. Gonzalez as El Galileo 7. Released in 1979 and distributed in, among others, the USA, Mexico, Venezuela, Bolivia, and Panama, each of these editions had a price imprint representing the local currency.
Dutch (as De Galileo 7) and German (as Die Gefangenen von Galileo Sieben) editions were announced in the previous title, but have not been released.

Cover gallery

External link 

Photonovels