The Martian Chronicles by Ray Bradbury

This book is a member favorite. I hadn't heard the term Fix-Up Novel before.

I am adding this to the list now so you can plan your summer reading. I may change the date as we get into summer.

The Martian Chronicles is a science fiction fix-up novel, published in 1950, by American writer Ray Bradbury that chronicles the exploration and settlement of Mars, the home of indigenous Martians, by Americans leaving a troubled Earth that is eventually devastated by nuclear war.
The Martian Chronicles is a fix-up novel[3][4] consisting of previously-published short stories along with new short bridge narratives in the form of interstitial vignettes, intercalary chapters, or expository narratives. The previously-published stories were revised for consistency of the overall story line and refinement.
The Martian Chronicles may at first appear to be a planned short story cycle; however, Bradbury did not specifically write The Martian Chronicles as a singular work – rather, its creation as a novel was suggested to Bradbury by a publisher's editor years after most of the stories had already appeared in many different publications (see Publication history and original publication notes under Contents). In responding to the suggestion, the 29-year-old Bradbury was shocked by the idea that he had already written a novel and remembers saying: "Oh, my God... I read Winesburg, Ohio by Sherwood Anderson when I was 24 and I said to myself, 'Oh God, wouldn't it be wonderful if someday I could write a book as good as this but put it on the planet Mars.'" - Wikipedia