9 books in series

Family d'Alembert

Family d'Alembert is a 9-book series with 9 released primary works first released in 1976 with contributions by Edward E. Smith and Stephen Goldin.

Stranglers' Moon
The Clockwork Traitor
Getaway World
Appointment at Bloodstar
The Purity Plot
Planet of Treachery
Eclipsing Binaries
The Omicron Invasion
Revolt of the Galaxy