Dear Peter Joaquim Redig is a Brazilian professor who developed a many years research on our flag. He published recently a book on the Brazilian flag in which examines the historical aspects of the flag, the popular use and its efficiency as a symbol, considering design issues. Unfortunately, it was published only in Portuguese, once is very rich in its iconography. If you're interested, please link: http://www.editorafraiha.com/livro_editado.php?id=64 Best regards Bitiz Afflalo " could anyone advise on literature that focuses on the design of cultural identities, national symbols, objects that typify regions and populations, how do these appear and how are they characterised, there is specific interest in the Gulf States. Thanks Pete"