And the French signal book - you have a copy?

Make sure you look in the right section of the signal book.

Jackson would have to put the signal book in at the last moment and then throw the bag over the side.

Now he's busy looking us up in the signal book.

Old Low signal book was a colossal task which took them the best part of two years.

Yet above all else the signal book with its secret codes mustn't fall into French hands.

Apart from the signal book, and some charts, that was all he needed.

Have some hands look for his body and find the signal book.

He went to his desk and took the Spanish signal book from a drawer.

Work on the signal book was completed in 1898 and a new version published.