March 8, 1833

Kirtland, Ohio
Joseph Smith received Doctrine and Covenants 90, a revelation stating that his counselors in the presidency, Sidney Rigdon and Frederick G. Williams, were to have increased authority and be "accounted as equal with thee in holding the keys of this last kingdom." They were ordained to their new responsibilities on March 18.
Sources: 
History of the Church, Joseph Smith, 1:329-31
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