Martin Luther —
Photo Credit: By Lucas Cranach the Elder - This file was derived from: Luther46c.jpg, Retouched version of faithful photographic reproduction, (from source file), Public Domain, https://commons.wikimedia.org/w/index.php?curid=74000573

Johannes Gutenberg —
Photo Credit: By http://www.sru.edu/depts/cisba/compsci/dailey/217students/sgm8660/Final/, Public Domain, https://commons.wikimedia.org/w/index.php?curid=31396

Mozart — Drawing of Mozart in silverpoint, made during Mozart's visit to Dresden, April 1789
Photo Credit: By Dora Stock - http://www.thedailybeast.com/articles/2013/02/09/what-mozart-really-looked-like-14-portraits-of-the-composer-photos-music.html, Public Domain, https://commons.wikimedia.org/w/index.php?curid=666045

A Masonic lodge meeting of Mozart's day, 1782 — The inside of what is thought to be the lodge New Crowned Hope (Zur Neugekrönten Hoffnung) in Vienna. It is believed that Wolfgang Amadeus Mozart is depicted at the extreme right, sitting next to his close friend Emanuel Schikaneder.
Photo Credit: By Ignaz Unterberger (1748-1797) - http://mozart2051.tripod.com/masonic_level.htm, Public Domain, https://commons.wikimedia.org/w/index.php?curid=19552168

Johannes Brahms, c. 1872 —
Photo Credit: By Unknown - https://quintessentialruminations.wordpress.com/2014/09/09/johannes-brahms-a-life-in-photos/, Public Domain, https://commons.wikimedia.org/w/index.php?curid=53924211

Ludwig van Beethoven (1820) —
Photo Credit: By Joseph Karl Stieler - http://www.fraunhofer.de/archiv/presseinfos/pflege.zv.fhg.de/german/press/pi/pi2002/08/md_fo6a.html, Public Domain, https://commons.wikimedia.org/w/index.php?curid=165990

Johann Sebastian Bach (aged 61) —
Photo Credit: By Elias Gottlob Haussmann - http://www.jsbach.net/bass/elements/bach-hausmann.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=1270015

Mary Anne Atwood —
Photo Credit: By Annie amartya - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=61901135

Albert Gallatin Mackey —
Photo Credit: By unspcified, Public Domain, https://commons.wikimedia.org/w/index.php?curid=24827423

Cover of Morals and Dogma — The Double-Headed Eagle of Lagash: emblem of the 33rd° of the Scottish Rite of Freemasonry
Photo Credit:

Albert Pike —
Photo Credit: By Mathew Brady - Public Domain, https://commons.wikimedia.org/w/index.php?curid=1485441