Question: What role-playing game designer helped jumpstart William H. Keith's career?
Sentence (from "William H. Keith Jr. bibliography"): William H. Keith's career started in 1978, when he and his brother J. Andrew Keith had seen ads in "Journal of the Travellers Aid Society" that stated that Game Designers' Workshop (GDW) was seeking authors; Loren Wiseman brought them on to begin freelancing for GDW in 1978 or 1979, and together the three of them set up a lot of the early tone for the "Traveller" universe.
Relevant evidence: Yes