Nei wai Mengguo tu. Library of Congress
Pen-and-ink. Relief shown pictorially. Available also through the Library of Congress Web site as a raster image.
Di tu zong yao Library of Congress
Nei wai Mengguo tu. Library of Congress
PDF) Lalo dialects across time and space: Subgrouping, dialectometry, and intelligibility
Ngugi wa Thiong'o soars 'In the House of the Interpreter': Review - Los Angeles Times
45 Wai Image: PICRYL - Public Domain Media Search Engine Public
45 Wai Image: PICRYL - Public Domain Media Search Engine Public
More cultural interaction teaching resources
File:Wu bei zhi LOC 2004633695-10.jpg - Wikipedia
45 Wai Image: PICRYL - Public Domain Media Search Engine Public
Route map of Rockhill's explorations in Mongolia and Tibet 1891
45 Wai Image: PICRYL - Public Domain Media Search Engine Public