When was the first book in the series which The Garden of Rama is in published?
The Garden of Rama: The Garden of Rama is a 1991 novel by Gentry Lee and Arthur C. Clarke. The Garden of Rama:  It is the third book in the four-book "Rama" series: "Rendezvous with Rama", "Rama II", "The Garden of Rama", and "Rama Revealed", and follows on from where "Rama II" left off. Rendezvous with Rama: Rendezvous with Rama is a science fiction novel by British writer Arthur C. Clarke first published in 1973.
1973