Photographs taken by Lt. Col. Sir Percy Sykes to illustrate Chinese Turkestan, the Russian Pamirs and Osh, April-November, 1915 was received by the David M. Rubenstein Rare Book & Manuscript Library as a purchase in 2018.:
https://repository.duke.edu/dc/sykespercy
This work is in the
public domain
in its country of origin and other countries and areas where the
copyright term
is the author's
life plus 70 years or fewer
.