Manuscripts for Friends of Secret Sciences

Author

Max Joseph Baron von original: "Freiherr von"; a German title of nobility. Max Joseph Baron von Linden (1833–1901) was a significant figure in 19th-century German Freemasonry and a contributor to its historical bibliography.
Linden

MNZ I, 296-7 Likely a citation for a Masonic reference work or periodical, such as a specific index or archival list.

Wolfstieg 42 540 : This refers to entry number 42,540 in August Wolfstieg’s Bibliography of Masonic Literature (Bibliographie der freimaurerischen Literatur), which remains the standard reference work for researchers of secret societies and their publications.