Unbeaten Tracks in Japan is compiled of the letters she sent to her sister during her 7 months sojourn in Japan in 1878. Her travels there took her from Edo (now called Tokyo) through the interior - where she was often the first foreigner the locals had met - to Niigata, and from there to Aomori. There she crossed over to Yezo (Hokkaido), and her account on the life of the Ainu, an indigenous people of Japan, provides an interesting glimpse of days long past.