The Societas Rosicruciana in Civitatibus Foederatis is a Rosicrucian Society based in the United States. Its history begins with the formation of a Grand High Council on April 21, 1880. Its official consecration occurred on September 21, 1880, by three Colleges chartered by the Societas Rosicruciana In Scotia. High Grade senior Christian Freemasons in the United States in search of the Classical Rosicrucian Society for Masons in the United Kingdom became interested in organizing a similar body in the United States. They did so under Scotland’s authority (Societas Rosicruciana In Scotia) with the help of Most Worthy Charles Matier of the SRIS, as early as 1873.  Membership is by invitation only & predicated on regular mainstream Masonic affiliation as well as a profession of Christian faith.