ZBT IHQ from the beginning has been located in New York City until 1995.....
1898-1900..... No Office location
1900-1908..... Office located on the East Campus of Columbia University
1908-1969..... Office located on the Upper West Side of NYC
1969-1985......Office located at Washington Square Park near NYU
(Formerly the Phi Sigma Delta Office)
1985-1995..... Office relocated back at the Upper West Side of NYC
1995-Present...Office located in Indianapolis, IN.
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