Easton, Robert Olney.
Guns, gold, and caravans : the extraordinary life and times of Fred Meyer Schroder, frontiersman and soldier of fortune, in California, Mexico, Alaska, and China ; including his discovery of the mysterious pyramids of Shensi and rescue of the boy emperor. (Santa Barbara, Calif. : Capra Press, 1978). [Bericht der Reise von Fred Meyer Schroder nach Shaanxi und Xi'an 1912].
https://catalog.hathitrust.org/Record/006004308. [Limited search].
(EastR1)
Travel and Legation Accounts