Before their churches were built, Christian Scientists met in Freemason Halls

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During the time when their churches were still being built, such as by Freemason Carl Werner (here), Christ Scientists met in Freemason Halls.

Encyclopedia of Cleveland History

CHRISTIAN SCIENTISTS

Case Western Reserve University 

https://case.edu/ech/articles/c/christian-scientists

The Fourth Church of Christ, Scientist, was founded in 1914, holding its first services in the Woodward Masonic Temple before moving into its own building in 1920. The Fifth Church held its first public services in a hall at W. 65th and Detroit Ave. in 1915, and later moved to Lake Ave. and W. 117th St. With members from the Third and Fifth churches, the Sixth Church was formed in 1922. A group from the First Church (Cleveland) organized the First Church of Christ, Scientist, in CLEVELAND HTS. in 1924. Services were held in the Hts. Masonic Temple until the new church at Lee Rd. and Fairmount Blvd. was completed (1939).