There appear to be at least 3 authors here. Arthur Young, UK, 1741-1820, Travels in France et.al.
The writer and cartoonist Art Young (USA, 1866-1943). The author of Quebec Nationalism. Arthur Young (1925- ) is the pen name of a Scottis doctor, author of A Surgeon's apprentice.
Also "Arthur Young" is the name of an International Accounting firm from the 70s and 80s