The ritual of the Holy Royal Arch, as taught in the Aldersgate Chapter of Improvement No. 1657, extended and annotated for the use of the Companions in the District of Nigeria /
Gray, George M.
Royal Arch Masons.Aldersgate Chapter of Improvement, No. 1657 (London, England)
London :  A. Lewis (Masonic Publishers), 
1946.
Royal Arch Masons