The Secret Teachings of All Ages cover —
Photo Credit:

Philosophical Research Society — Los Feliz headquarters in 2015
Photo Credit: By Junkyardsparkle - Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=45393903

Ticket for Manly P. Hall at Carnegie Hall, 2 December 1942 —
Photo Credit: By Mphsociety - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=37535457

Manly P Hall — in the late 1920s
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=99307865

Robert Cailliau, Jean-François Abramatic, and Tim Berners-Lee at the tenth anniversary of the World Wide Web Consortium. —
Photo Credit: By Robert Cailliau - received by e-mail, part of e-mail interview with Robert Cailliau, CC BY-SA 2.5, https://commons.wikimedia.org/w/index.php?curid=2528377

The corridor where the World Wide Web was born, on the ground floor of building No. 1 at CERN —
Photo Credit: By Lupus sat - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=44983684

First web server — This NeXT Computer was used by Berners-Lee at CERN and became the world's first web server
Photo Credit: By Coolcaesar at the English-language Wikipedia, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=395096

WWW's "historical" logo — created by Robert Cailliau in 1990. Made of three W using the Optima Bold font, according to Cailliau himself
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=7031458

official (World Wide Web Consortium) Icon —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=4415412

Tim Berners-Lee — 2005
Photo Credit: By Uldis Bojārs - Flickr., CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=2540892

The Synchrocyclotron (SC) at CERN —
Photo Credit: By Z22 - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=61549963