The book of the chapter : or, Monitorial instructions, in the degrees of mark, past and most excellent master, and the holy Royal arch
A Freemasonry ritual manual by Albert Gallatin Mackey, published in New York by Macoy & Sickels in 1865, giving monitorial instructions for the Mark, Past and Most Excellent Master, and Royal Arch degrees. The pictures are small plain line drawings of triangular emblems hung from a ring, each enclosing a single object such as a sword, a figure, or a folded cushion. A designer might take from them a simple repeated framing device of nested triangles around one central motif.
