This paper summarizes work conducted under a recent NASA study contract and Boeing studies on improved Saturn V vehicles and intermediate payload Saturn vehicles. The contractual study was a part of a continuing effort by NASA to identify a spectrum of practical launch vehicles to meet potential future payload and mission requirements as they become defined.; UAHuntsville's Saturn V finding aid has the title as: Saturn V Growth and Flexibility, by J.E. Martin.; Preferred Citation: [Identification of item] Saturn V Collection, Dept. of Archives/Special Collections, M. Louis Salmon Library, University of Alabama in Huntsville, Huntsville, AL.