This ethnological research done by Janet McGovern records a trip taken a few years earlier in Taiwan. From 1916 to 1918, she walked off the beaten track to find the stories and lives of the aborigines of Taiwan. This study mainly focuses on social organization and costumes of the Indigenous inhabitants of Taiwan.

The Head Hunters of Northern Luzon is a book by Cornelis DeWitt Willcox. It depicts various ethnic groups in the mountains of northern Luzon, Philippines; where the practice of hunting a human and collecting the severed head after a killing was still practiced until very recent times.