Joao-Manuel Mimoso has created a Web site devoted to hotel labels. People in the 1800s and early 1900s would apply hotel labels to their luggage as souvenirs chronicling their travels. The site has some beautiful examples of these small works of art along with their history.
The author, Joao-Manuel Mimoso, is a mechanical engineer and collector who has traveled extensively searching for old luggage labels and gathering information on these little-studied but highly interesting pieces of graphic design. He has written a book on the topic of hotel labels soon to be published.
~http://pagina.netc.pt/~nd24322a/index.html