Core Readings:
The Silk Road Journey with Xuanzang, Wriggins pp 36 to 54
Xuanzang at the Iron Gates 1 page
Bamayan - Getty Images https://www.gettyimages.com/photos/bamiyan-buddhas?sort=mostpopular&mediatype=photography&phrase=bamiyan%20buddhas
For Further Reading:
Balkh – Wikipedia 7 pages https://en.m.wikipedia.org/wiki/Balkh
Buddhas of Bamiyan – Wikipedia 8 pages, including illustrations https://en.wikipedia.org/wiki/Buddhas_of_Bamiyan