G.N.K.R. No. 502: A Call to the “Awakened” From “The Unseen and Unknown” for an Esoteric College, and for G…. R Dept. No. 1 (1888), by Hiram E. Butler (page images at HathiTrust)
New Online Books
http://catalog.hathitrust.org/Record/001931205
Free ebooks and useful pdf