Pauline Gibling Schindler was a fascinating modern artist with ties to Halcyon. This article by John Crosse discusses her life and contains her memorable descriptions of Halcyon in the 1930s.
Theosophy Watch is a useful site with lots of good information about modern Theosophy.
Theosophy Wiki is a compendium of information about Theosophy with content in English, Russian, French, Spanish, and Italian.
Blavatsky.net focuses on Madame Blavatsky and her teaching. It features an introduction to Theosophy, study aids, research tools, original text, supporting evidence, membership, and visitor interaction. Here is a link to an interesting article on the site, “Rounds and Races” by William Quan Judge.
Theoscience.org offers research relevant to Theosophy.