Pacific Coast Society of Magicians
In 1917, it merged with SAM as the Golden Gate Assembly.
Their official organ was Thayer's Magical Bulletin for a few months, from Vol. 01 No. 03 (March 1914) until Vol 2. No. 3 (Sept. 1914).
Club reports starting show up again with Vol 3. No. 4 (April 1915).