This is what I have for Twain's residences in Europe (where "residence" is loosely defined as where he/they stayed for a month or more and/or moved furniture in):
Paris, FranceFlorence, ItalyChelsea, London, England;23 Tedworth SquareKaltenleutgeben, AustriaVienna, AustriaWeggis, SwitzerlandHeidelberg, GermanyMunich, Germany
I am making maps such as this one:




- B. Clay Shannon