The Book of Squares
The Book of Squares is the book within which the Planetary squares are drawn in order to invoke the forces. The Book itself is a gamahe; it is to be constructed of fine papers by the thaumaturgist. It should be duly blessed and fumigated. The first seven pages should contain empty Magic Squares for Sunday thru Saturday, and this pattern of seven should repeat throughout the entire book. The thaumaturgist should, after filling up the entire book with the empty squares, fill in each square with the appropriate Hebrew numbers/letters. This should be done on the hour and day of the force of the square. If it is done every day, the book will be filled quickly. This saves quite a bit of time during ritual, and results in a very personal and powerful Book of Squares.
If there is available access to a pre-printed Book of Squares, it should be fumigated and blessed each day of the week, starting on Sunday during the hour of the Sun and continuing each day during the hour of it's force for one week in order to consecrate and purify it. (I'm going to make one of these available on Lulu in the next couple of weeks).