Session |
Delegates |
Session Dates |
Location |
| 1 | 20 | May 20 to May 23, 1863 | Battle Creek, Michigan, USA |
| 2 | 20 | May 18 to May 21, 1864 | Battle Creek, Michigan, USA |
| 3 | 21 | May 17, 1865 | Battle Creek, Michigan, USA |
| 4 | 19 | May 16 and May 17, 1866 | Battle Creek, Michigan, USA |
| 5 | 18 | May 14 to May 19, 1867 | Battle Creek, Michigan, USA |
| 6 | 15 | May 12 to May 18, 1868 | Battle Creek, Michigan, USA |
| 7 | 16 | May 18 to May 24, 1869 | Battle Creek, Michigan, USA |
| 8 | 22 | March 15 to March 20, 1870 | Battle Creek, Michigan, USA |
| 9 | 17 | February 7 to February 12, 1871 | Battle Creek, Michigan, USA |
| 10 | 14 | December 29, 1871 to January 3, 1872 | Battle Creek, Michigan, USA |
| 11 | 18 | March 11 to March 14, 1873 | Battle Creek, Michigan, USA |
| 12 | 21 | November 14 to November 16, 1873 | Battle Creek, Michigan, USA |
| 13 | 19 | August 10 to August 15, 1874 | Battle Creek, Michigan, USA |
| 14 | 18 | August 15 to August 18, 1875 | Battle Creek, Michigan, USA |
| 1st Special | 15 | March 31 to April 4, 1876 | Battle Creek, Michigan, USA |
| 15 | 16 | September 19 to September 24, 1876 | Lansing, Michigan, USA |
| 2nd Special | 16 | November 12 and 13, 1876 | Battle Creek, Michigan, USA |
| 16 | 20 | September 20 to September 28, 1877 | Lansing, Michigan, USA |
| 3rd Special | 22 | March 1 to March 4, 1878 | Battle Creek, Michigan, USA |
| 17 | 39 | October 4 to October 16, 1878 | Battle Creek, Michigan, USA |
| 4th Special | 29 | April 17 to April 23, 1879 | Battle Creek, Michigan, USA |
| 18 | 39 | November 7 to December 1, 1879 | Battle Creek, Michigan, USA |
| 5th Special | 28 | March 11 to March 15, 1880 | Battle Creek, Michigan, USA |
| 19 | 38 | October 6 to October 12, 1880 | Battle Creek, Michigan, USA |
| 20 | 41 | December 1 to December 19, 1881 | Battle Creek, Michigan, USA |
| 21 | 47 | December 7 to December 19, 1882 | Rome, New York, USA |
| 22 | 65 | November 8 to November 20, 1883 | Battle Creek, Michigan, USA |
| 23 | 67 | October 30 to November 20, 1884 | Battle Creek, Michigan, USA |
| 24 | 70 | November 18 to December 6, 1885 | Battle Creek, Michigan, USA |
| 25 | 71 | November 18 to December 6, 1886 | Battle Creek, Michigan, USA |
| 26 | 70 | November 13 to December 12, 1887 | Oakland, California, USA |
| 27 | 91 | October 17 to November 8, 1888 | Minneapolis, Minnesota, USA |
| 28 | 109 | October 18 to November 5, 1889 | Battle Creek, Michigan, USA |
| 29 | 125 | March 5 to March 25, 1891 | Battle Creek, Michigan, USA |
| 30 | 130 | February 17 to March 6, 1893 | Battle Creek, Michigan, USA |
| 31 | 150 | February 15 to March 4, 1895 | Battle Creek, Michigan, USA |
| 32 | 140 | February 19 to March 8, 1897 | College View, Nebraska, USA |
| 33 | 149 | February 15 to March 7, 1899 | South Lancaster, Massachusetts, USA |
| 34 | 268 | April 2 to April 23, 1901 | Battle Creek, Michigan, USA |
| 35 | 139 | March 27 to April 13, 1903 | Oakland, California, USA |
| 36 | 197 | May 11 to May 30, 1905 | Washington, D.C., USA |
| 37 | 328 | May 13 to June 6, 1909 | Washington, D.C., USA |
| 38 | 372 | May 15 to June 8, 1913 | Washington, D.C., USA |
| 39 | 443 | March 29 to April 14, 1918 | San Francisco, California, USA |
| 40 | 581 | May 11 to May 28, 1922 | San Francisco, California, USA |
| 41 | 577 | May 27 to June 14, 1926 | Milwaukee, Wisconsin, USA |
| 42 | 577 | May 28 to June 12, 1930 | San Francisco, California, USA |
| 43 | 671 | May 26 to June 8, 1936 | San Francisco, California, USA |
| 44 | 619 | May 26 to June 7, 1941 | San Francisco, California, USA |
| 45 | 828 | June 5 to June 15, 1946 | Washington, D.C., USA |
| 46 | 943 | July 10 to July 22, 1950 | San Francisco, California, USA |
| 47 | 1,109 | May 24 to June 5, 1954 | San Francisco, California, USA |
| 48 | 1,160 | June 19 to June 28, 1958 | Cleveland, Ohio, USA |
| 49 | 1,314 | July 26 to August 4, 1962 | San Francisco, California, USA |
| 50 | 1,495 | June 16 to June 25, 1966 | Detroit, Michigan, USA |
| 51 | 1,782 | June 11 to June 20, 1970 | Atlantic City, New Jersey, USA |
| 52 | 1,756 | July 10 to July 19, 1975 | Vienna, Austria |
| 53 | 1,925 | April 16 to April 26, 1980 | Dallas, Texas, USA |
| 54 | 2,044 | June 27 to July 6, 1985 | New Orleans, Louisiana, USA |
| 55 | 2,239 | July 5 to July 14, 1990 | Indianapolis, Indiana, USA |
| 56 | 2,321 | June 29 to July 8, 1995 | Utrecht, Netherlands |
| 57 | 1,844 | June 29 to July 8, 2000 | Toronto, Canada |
| 58 | 1,903 | June 29 to July 9, 2005 | Saint Louis, Missouri, USA |
| 59 | 2,244 | June 23 to July 3, 2010 | Atlanta, Georgia, USA |
| 60 | 2,536 | July 02 to July 11, 2015 | San Antonio, Texas, USA |
| 6th Special | 290 | January 18, 2022 | Silver Spring, Maryland, USA |
| 61st | 2,673 | June 6-11, 2022 | St. Louis, Missouri, USA |