Brochure printed as a single large sheet folded in 6 pages, suitable for mailing. While this brochure has no date, MacEoin notes in his bibliography that a version was published in Third World 1 (1 April 1975).
See also The Bahá'í Temple, House of Worship of a World Faith (1942) and Photo brochure of the Bahá'í Temple in Wilmette (1965).
Documents posted between 2003-2012 had various slightly different URLs and sometimes can be found in archive.org with addresses like bahai-library.com/file.php5?file=christian_chicago_house_worship.