Bibliography:
'The Art and Skill of Radio Telegraphy'
by William G. Perpont, N0HFF'Morse Code: The Essential LanguageŽ
by L. Peter Carron Jr., W3DKV and published by the A.R.R.L.'Como ser/How to be an Alfacinha'
by Margarida Sarda and published by Contexto.'Portugal with Madeira and the Azores'
main consultant Martin Symington and published by Dorling Kindersley