Américo Damasceno is a brazilian electrical engineer, having worked all his life for IBM (since 1969). Now he is retired(?) and is only(?) a book writer, having 14 books about IT (system development, programming etc.) published . His books are published, in portuguese, by the Editora Érica, from Sao Paulo-Brasil and, in spanish, by Editorial Metodos, from Buenos Aires-Argentina. He is the creator of OLPCities a project that is beeing implemented in portuguese at: this link He has also a site about OLPC having a blog and a course (many lessons and demos) about how to create activities (applications) for the XO. The address: dmu.com. All in portuguese, sorry.