In Search of Dominguez & Escalante, Mac Gregor & Halus, Museum of New Mexico Press, Santa Fe, 2011
Lewis and Clark Revisited, Greg Mac Gregor, Center for Documentary Studiesy, Duke University, 2003
Overland the California emigrant trail of 1841, greg mac gregor, universty of new mexico, albquerque, 1996
Overland, The Californa emigrant trail of 1841i, Greg Mac Gregor, UNiversity of New Mexico Press, Albuquerque, 1996
Deus Ex Machina, Greg Mac Gregor, Studebaker press, Berkeley, CA, 1975