Deflation
Deflation occurred periodically in the U.S. during the 19th century (the most important exception was during the Civil War). This deflation was at times caused by technological progress that created significant economic growth, but at other times it was triggered by financial crises — notably the Panic of 1837 which caused deflation through 1844, and the Panic of 1873 which triggered the Long Depression that lasted until 1879. These deflationary periods preceded the establishment of the U.S. Federal Reserve System and its active management of monetary matters. Episodes of deflation have been rare and brief since the Federal Reserve was created (a notable exception being the Great Depression) while U.S. economic progress has been unprecedented.
Depression of 1882–85
The Depression of 1882–85 or Recession of 1882–85 was an economic contraction in the United States that lasted from March 1882 to May 1885, according to the National Bureau of Economic Research. At 38 months in length this is the third-longest recession in the NBER's chronology of business cycles from 1854 to present. Only the Great Depression of 1929-1941 and the Long Depression of 1873–79 were longer.