He has written a comprehensive biography of Dr. Robert Semple, a California pioneer who contributed greatly to the American annexation of California. Portions of this work have been published in The Argonaut and the Colusa County Wagon Wheels. He has also carried out original research on other pioneers, the early history of printing in California, the Sonoma Mission, and the first theatre in California. He is currently researching the lives of several less well-known Californios of the 1830s and 1840s.