William H. Keith's writing career started in 1978, when he and his brother J. Andrew Keith began writing for Game Designers' Workshop (GDW) for their Traveller universe.
He has written under several pseudonyms, most notably as H. Jay Riker and Ian Douglas.
Written with Peter Jurasik: Ghostwritten for Bruce Boxleitner: Writing as H. Jay Riker.
[4] CD-Rom Game Guides, written with Nina Barton: Craft: Essays: Writing as Ian Douglas.
[7] Written with Lt. Col. Anthony Shaffer Writing as Ian Douglas.