This book was found in Lawrence Bacon's house - open on his desk. Published in 1902 it contains translations of writings found hammered in unknown writing, onto copper sheets discovered in Guatemalan ruins.

The writings are a set of prayers and libations to a God called Hastur. Included amongst them is the full text of the prayer carved onto the stones at Springer Mound and instructions for the creation and use of The Chime of Tezchaptl.

Andrew Saunders studied the book, and was able to discover the following extracts and notes.