I was driving through San Diego recently and saw Lockheed's compound there. I wondered if this was the birthplace of the Tristar. Where were Tristars assembled, and what is assembled there now? Assuming the building still exists of course.
In addition to the TriStar final assembly plant, Lockheed also built an adjacent special test hangar for static and fatique tests at Palmdale. Although more of a history of Lockheed as a company, the Douglas Ingells book "L-1011 TriStar and The Lockheed Story" has a couple of detailed chapters on the Antelope Valley facility which may be of interest to you. Regards...Jack