The book's secret alien races is one of the most controversial documents originating from the period when Russia was dominated by communism. The first edition of the book was published in 1946 and was designed to inform the secret agents of the various alien races who had visited our planet until that time. As long as the iron curtain Russia resisted valuable information in this book they were enshrined. The moment the Communist regime began to falter, book secret alien races came in the hands of a Russian diplomat, who chose to live in Portugal. His son, and a friend, found the book among several other top secret documents bearing the trade mark for the first time translated into English in 2004. The book is fascinating because it has many kinds of alien species, their ships and place of origin. Each alien species, which is presented in the book, and has contributed in one way or another about human evolution on Earth. These aliens have been sighted in various places of our planet and