Reading The Review, you found the following FRED graph of Anbil, Carlson, Hanes, and Wheelock data on the federal funds rate between July 1949 and June 1954 and Board of Governors data on the federal funds rate since July 1954: https://fred.stlouisfed.org/graph/?g=GHrGLinks to an external site.. Which source periodically adds new data to their series and which source doesn't? Reading The Review, you found the following FRED graph of Anbil, Carlson, Hanes, and Wheelock data on the federal funds rate between July 1949 and June 1954 and Board of Governors data on the federal funds rate since July 1954: https://fred.stlouisfed.org/graph/?g=GHrGLinks to an external site.. Which source periodically adds new data to their series and which source doesn't? Both series are periodically updated and add new data. Neither series are periodically updated or add new data. Only Anbil, Carlson, Hanes, and Wheelock periodically release more data. Only the Board of Governors periodically releases more data