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Senate Chamber Desks

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Seating Plans: 1810—2001

These historic Senate Chamber maps are reproduced from the Congressional Directory and other sources. The desk numbers on the floor plans were used to quickly identify a senator’s seating location in the Senate Chamber. They do not correspond to the numbers used today to identify individual desks.

Current Senate Chamber (1859—2001)
Date Congress
1860 (36th Congress, 1st session)
1860 (36th Congress, 1st session)
1861 (36th Congress, 2nd session)
1863 (37th Congress, 3rd session)
1866 (39th Congress, 2nd session)
1867 (39th Congress, 2nd session)
1867 (40th Congress, 1st session)
1867 (40th Congress, 2nd session)
1868 (40th Congress, 2nd session)
1869 (40th Congress, 3rd session)
1869 (40th Congress, 3rd session)
1869 (41st Congress, 1st session)
1869 (41st Congress, 1st session)
1869 (41st Congress, 1st session)
1869 (41st Congress, 2nd session)
1870 (41st Congress, 2nd session)
1870 (41st Congress, 3rd session)
1871 (41st Congress, 3rd session)
1871, Mar 25 (42nd Congress, 1st session)
1872_1 1872, Jan 15 (42nd Congress, 2nd session)
1872_2 1872, May 20 (42nd Congress, 2nd session)
1872_3 1872, Dec 14 (42nd Congress, 3rd session)
1873_1 1873, Feb 12 (42nd Congress, 3rd session)
1874_1 1874, Feb 24 (43rd Congress, 1st session)
1874_2 1874, Jun 13 (43rd Congress, 1st session)
1874_3 1874, Dec 15 (43rd Congress, 2nd session)
1875_1 1875, Feb 1 (43rd Congress, 2nd session)
1875_2 1875, Dec 20 (44th Congress, 1st session)
1876_1 1876, Jan 22 (44th Congress, 1st session)
1876_2 1876, Aug 12 (44th Congress, 1st session)
1876_3 1876, Dec 13 (44th Congress, 2nd session)
1877_1 1877, Feb 1 (44th Congress, 2nd session)
1877_2 1877, Oct 18 (45th Congress, 1st session)
1877_3 1877, Dec 10 (45th Congress, 2nd session)
1878_1 1878, Feb 7 (45th Congress, 2nd session)
1878_2 1878, Jun 10 (45th Congress, 2nd session)
1878_3 1878, Dec 9 (45th Congress, 3rd session)
1879_1 1879, Jan 29 (45th Congress, 3rd session)
1879_2 1879, Apr 12 (46th Congress, 1st session)
1879_3 1879, Dec 6 (46th Congress, 2nd session)
1880_1 1880, Jan 29 (46th Congress, 2nd session)
1880_2 1880, May 20 (46th Congress, 2nd session)
1880_3 1880, Dec 10 (46th Congress, 3rd session)
1881_1 1881, Jan 21 (46th Congress, 3rd session)
1881_2 1881, Dec 21 (47th Congress, 1st session)
1882_1 1882, Feb 1 (47th Congress, 1st session)
1882_2 1882, Jun 28 (47th Congress, 1st session)
1882_3 1882, Dec 11 (47th Congress, 2nd session)
1883_1 1883, Feb 3 (47th Congress, 2nd session)
1883_2 1883, Dec 24 (48th Congress, 1st session)
1884_1 1884, Feb 15 (48th Congress, 1st session)
1884_2 1884, Jun 30 (48th Congress, 1st session)
1884_3 1884, Dec 10 (48th Congress, 2nd session)
1885_1 1885, Feb 11 (48th Congress, 2nd session)
1885_2 1885, Dec 17 (49th Congress, 1st session)
1886_1 1886, Jan 16 (49th Congress, 1st session)
1886_2 1886, May 15 (49th Congress, 1st session)
1886_3 1886, Dec 11 (49th Congress, 2nd session)
1887_1 1887, Feb 5 (49th Congress, 2nd session)
1887_2 1887, Dec 3 (50th Congress, 1st session)
1888_1 1888, Jan 15 (50th Congress, 1st session)
1888_2 1888, Apr 15 (50th Congress, 1st session)
1888_3 1888, Dec 7 (50th Congress, 2nd session)
1889_1 1889, Jan 25 (50th Congress, 2nd session)
1889_2 1889, Dec 5 (51st Congress, 1st session)
1890_1 1890, Jan 25 (51st Congress, 1st session)
1890_2 1890, May 10 (51st Congress, 1st session)
1890_3 1890, Dec 3 (51st Congress, 2nd session)
1891_1 1891, Jan 15 (51st Congress, 2nd session)
1891_2 1891, Dec 5 (52nd Congress, 1st session)
1892_1 1892, Jan 29 (52nd Congress, 1st session)
1892_2 1892, May 7 (52nd Congress, 1st session)
1892_3 1892, Dec 12 (52nd Congress, 2nd session)
1893_1 1893, Feb 10 (52nd Congress, 2nd session)
1893_2 1893, Apr 20 (53rd Congress, extraordinary session)
1893_3 1893, Aug 7 (53rd Congress, 1st session)
1893_4 1893, Oct 10 (53rd Congress, 1st session)
1893_5 1893, Dec 1 (53rd Congress, 2nd session)
1894_1 1894, Feb 1 (53rd Congress, 2nd session)
1894_2 1894, May 1 (53rd Congress, 2nd session)
1894_3 1894, Dec 1 (53rd Congress, 3rd session)
1895_1 1895, Feb 1 (53rd Congress, 3rd session)
1895_2 1895, Dec 7 (54th Congress, 1st session)
1896_1 1896, Jan 15 (54th Congress, 1st session)
1896_2 1896, Apr 22 (54th Congress, 1st session)
1896_3 1896, Dec 12 (54th Congress, 2nd session)
1897_1 1897, Jan 22 (54th Congress, 2nd session)
1897_2 1897, Mar 12 (55th Congress, extraordinary session)
1897_3 1897, Jun 24 (55th Congress, extraordinary session)
1897_4 1897, Dec 13 (55th Congress, 2nd session)
1898_1 1898, Feb 21 (55th Congress, 2nd session)
1898_2 1898, Dec 5 (55th Congress, 3rd session)
1899_1 1899, Jan 12 (55th Congress, 3rd session)
1899_2 1899, Dec 8 (56th Congress, 1st session)
1900_1 1900, Jan 10 (56th Congress, 1st session)
1900_2 1900, Apr 18 (56th Congress, 1st session)
1900_3 1900, Nov 27 (56th Congress, 2nd session)
1901_1 1901, Jan 8 (56th Congress, 2nd session)
1901_2 1901, Dec 5 (57th Congress, 1st session)
1902_1 1902, Jan 16 (57th Congress, 1st session)
1902_2 1902, Apr 11 (57th Congress, 1st session)
1902_3 1902, Nov 26 (57th Congress, 2nd session)
1903_1 1903, Jan 5 (57th Congress, 2nd session)
1903_2 1903, Mar 3 (58th Congress, special session)
1903_3 1903, Nov 5 (58th Congress, extraordinary session)
1903_4 1903, Dec 4 (58th Congress, 2nd session)
1904_1 1904, Jan 21 (58th Congress, 2nd session)
1904_2 1904, Apr 1 (58th Congress, 2nd session)
1904_3 1904, Dec 1 (58th Congress, 3rd session)
1905_1 1905, Jan 6 (58th Congress, 3rd session)
1905_2 1905, Dec 6 (59th Congress, 1st session)
1906_1 1906, Jan 10 (59th Congress, 1st session)
1906_2 1906, Apr 3 (59th Congress, 1st session)
1906_3 1906, Nov 30 (59th Congress, 2nd session)
1907_1 1907, Jan 9 (59th Congress, 2nd session)
1907_2 1907, Dec 4 (60th Congress, 1st session)
1908_1 1908, Jan 20 (60th Congress, 1st session)
1908_2 1908, Apr 15 (60th Congress, 1st session)
1908_3 1908, Dec 3 (60th Congress, 2nd session)
1909_1 1909, Jan 6 (60th Congress, 2nd session)
1909_2 1909, Mar 22 (61st Congress, 1st session)
1909_3 1909, Dec 3 (61st Congress, 2nd session)
1910_1 1910, Jan 17 (61st Congress, 2nd session)
1910_2 1910, Apr 7 (61st Congress, 2nd session)
1910_3 1910, Nov 29 (61st Congress, 3rd session)
1911_1 1911, Jan 18 (61st Congress, 3rd session)
1911_2 1911, May (62nd Congress, 1st session)
1911_3 1911, Dec 4 (62nd Congress, 2nd session)
1912_1 1912, Jan (62nd Congress, 2nd session)
1912_2 1912, Apr (62nd Congress, 2nd session)
1912_3 1912, Dec 2 (62nd Congress, 3rd session)
1913_1 1913, Jan (62nd Congress, 3rd session)
1913_2 1913, Apr 7 (63rd Congress, 1st session)
1913_3 1913, Dec 1 (63rd Congress, 2nd session)
1914_1 1914, Feb (63rd Congress, 2nd session)
1914_2 1914, May (63rd Congress, 2nd session)
1914_3 1914, Dec 7 (63rd Congress, 3rd session)
1915_1 1915, Jan (63rd Congress, 3rd session)
1915_2 1915, Dec 6 (64th Congress, 1st session)
1916_1 1916, Jan (64th Congress, 1st session)
1916_2 1916, May (64th Congress, 1st session)
1916_3 1916, Dec 4 (64th Congress, 2nd session)
1917_1 1917, Jan (64th Congress, 2nd session)
1917_2 1917, Apr 2 (65th Congress, 1st session)
1917_3 1917, Dec 3 (65th Congress, 2nd session)
1918_1 1918, Jan (65th Congress, 2nd session)
1918_2 1918, Apr (65th Congress, 2nd session)
1918_3 1918, Dec 2 (65th Congress, 3rd session)
1919_1 1919, Jan (65th Congress, 3rd session)
1919_2 1919, Jul (66th Congress, 1st session)
1919_3 1919, Dec 1 (66th Congress, 2nd session)
1920_1 1920, Feb (66th Congress, 2nd session)
1920_2 1920, May (66th Congress, 2nd session)
1920_3 1920, Dec 6 (66th Congress, 3rd session)
1921_1 1921, Jan (66th Congress, 3rd session)
1921_2 1921, May (67th Congress, 1st session)
1921_3 1921, Dec 5 (67th Congress, 2nd session)
1922_1 1922, Feb (67th Congress, 2nd session)
1922_2 1922, Jul (67th Congress, 2nd session)
1922_3 1922, Dec 4 (67th Congress, 4th session)
1923_1 1923, Jan (67th Congress, 4th session)
1923_2 1923, Dec 3 (68th Congress, 1st session)
1924_1 1924, Jan (68th Congress, 1st session)
1924_2 1924, May (68th Congress, 1st session)
1924_3 1924, Dec 1 (68th Congress, 2nd session)
1925_1 1925, Jan (68th Congress, 2nd session)
1925_2 1925, Dec 7 (69th Congress, 1st session)
1926_1 1926, Jan (69th Congress, 1st session)
1926_2 1926, Dec 6 (69th Congress, 2nd session)
1927_1 1927, Jan (69th Congress, 2nd session)
1927_2 1927, Dec 5 (70th Congress, 1st session)
1928_1 1928, Jan (70th Congress, 1st session)
1928_2 1928, Dec 3 (70th Congress, 2nd session)
1929_1 1929, Jan (70th Congress, 2nd session)
1929_2 1929, May (71st Congress, 1st session)
1929_3 1929, Dec 2 (71st Congress, 2nd session)
1930_1 1930, Jan 18 (71st Congress, 2nd session)
1930_2 1930, Nov 21 (71st Congress, 3rd session)
1931_1 1931, Jan 9 (71st Congress, 3rd session)
1931_2 1931, Nov 27 (72nd Congress, 1st session)
1932_1 1932, Jan 15 (72nd Congress, 1st session)
1932_2 1932, Nov 23 (72nd Congress, 2nd session)
1933_1 1933, Jan 13 (72nd Congress, 2nd session)
1933_2 1933, Jun 3 (73rd Congress, 1st session)
1933_3 1933, Dec 21 (73rd Congress, 2nd session)
1934_1 1934, May 4 (73rd Congress, 2nd session)
1934_2 1934, Dec 20 (74th Congress, 1st session)
1935_1 1935, Mar 21 (74th Congress, 1st session)
1935_2 1935, Dec 21 (74th Congress, 2nd session)
1936_1 1936, Apr 17 (74th Congress, 2nd session)
1936_2 1936, Dec 20 (75th Congress, 1st session)
1937_1 1937, Feb 18 (75th Congress, 1st session)
1937_2 1937, Dec 21 (75th Congress, 3rd session)
1938_1 1938, May 5 (75th Congress, 3rd session)
1938_2 1938, Dec 20 (76th Congress, 1st session)
1939_1 1939, Mar 23 (76th Congress, 1st session)
1939_2 1939, Dec 19 (76th Congress, 3rd session)
1940_1 1940, Jun 6 (76th Congress, 3rd session)
1940_2 1940, Dec 19 (77th Congress, 1st session)
1941_1 1941, Apr 23 (77th Congress, 1st session)
1941_2 1941, Dec 19 (77th Congress, 2nd session)
1942_1 1942, May 26 (77th Congress, 2nd session)
1942_2 1942, Dec 21 (78th Congress, 1st session)
1943_1 1943, May 14 (78th Congress, 1st session)
1944_1 1944, Jan 10 (78th Congress, 2nd session)
1944_2 1944, Jun 2 (78th Congress, 2nd session)
1945_1 1945, Feb 2 (79th Congress, 1st session)
1945_2 1945, Aug 14 (79th Congress, 1st session)
1946_1 1946, Jan 1 (79th Congress, 2nd session)
1946_2 1946, Jun 29 (79th Congress, 2nd session)
1947_1 1947, Feb 14 (80th Congress, 1st session)
1947_2 1947, Jun 11 (80th Congress, 1st session)
1947_3 1947, Dec 13 (80th Congress, 2nd session)
1948_1 1948, May 19 (80th Congress, 2nd session)
1949_1 1949, Feb 15 (81st Congress, 1st session)
1950_1 1950, Jan 3 (81st Congress, 2nd session)
1951_1 1951, Jan 3 (82nd Congress, 1st session)
1952_1 1952, Jan 8 (82nd Congress, 2nd session)
1953_1 1953, Jan 3 (83rd Congress, 1st session)
1954_1 1954, Jan 18 (83rd Congress, 2nd session)
1955_1 1955, Feb 14 (84th Congress, 1st session)
1956_1 1956, Jan 3 (84th Congress, 2nd session)
1957_1 1957, Jan 3 (85th Congress, 1st session)
1958_1 1958, Jan 7 (85th Congress, 2nd session)
1959_1 1959, Jan 7 (86th Congress, 1st session)
1960_1 1960, Jan 6 (86th Congress, 2nd session)
1961_1 1961, Jan 3 (87th Congress, 1st session)
1963_1 1963, Jan 9 (88th Congress, 1st session)
1964_1 1964, Jan 7 (88th Congress, 2nd session)
1965_1 1965, Jan 4 (89th Congress, 1st session)
1966_1 1966, Jan 10 (89th Congress, 2nd session)
1967_1 1967, Feb 28 (90th Congress, 1st session)
1967_2 1967, Dec 15 (90th Congress, 2nd session)
1969_1 1969, Jan 3 (91st Congress, 1st session)
1970_1 1970, Jan 19 (91st Congress, 2nd session)
1971_1 1971, Mar 10 (92nd Congress, 1st session)
1972_1 1972, Jan 18 (92nd Congress, 2nd session)
1974_1 1974, Jan 21 (93rd Congress, 2nd session)
1976_1 1976, Jan 19 (94th Congress, 2nd session)
1977_1 1977, Mar 25 (95th Congress, 1st session)
1979_1 1979, Mar 23 (96th Congress, 1st session)
1981_1 1981, Apr 1 (97th Congress, 1st session)
1983_1 1983, Mar 31 (98th Congress, 1st session)
1985_1 1985, Apr 5 (99th Congress, 1st session)
1987_1 1987, Apr 15 (100th Congress, 1st session)
1989_1 1989, Apr 18 (101st Congress, 1st session)
1991_1 1991, Mar 1 (102nd Congress, 1st session)
1993_1 1993, Jun 5 (103rd Congress, 1st session)
1995_1 1995, Mar 17 (104th Congress, 1st session)
1997_1 1997, Feb 24 (105th Congress, 1st session)
1999_1 1999, Feb 2 (106th Congress, 1st session)
2001_1 2001, Jan 3 (107th Congress, 1st session)
Old Senate Chamber (1810—1859)
DateCongress
1840_11840, Jan 3–1840, Jan 12(26th Congress, 1st session)
1841_11841, May–1841, Sep(27th Congress, 1st session)
1842_11842, Jul 6–1842, Nov 29(27th Congress, 2nd session)
1845_11845, Jan 1–1845, Jan 27(28th Congress, 2nd session)
1845_21845, Dec 1–1846, Jun 22(29th Congress, 1st session)
1848_11848, Jan 17–1848, Feb 4(30th Congress, 1st session)
1848_21848, Jun 22–1848, Jul 12(30th Congress, 1st session)
1848_31848, Dec 26–1849, Feb 23(30th Congress, 2nd session)
1850_11850, Jan 14–1850, Mar 30(31st Congress, 1st session)
1850_21850, Dec 2–1851, Feb 21(31st Congress, 2nd session)
1852_11852, Jan 1–1852, Mar 11(32nd Congress, 1st session)
1852_21852, Dec 20–1853, Jan 14(32nd Congress, 2nd session)
1853_11853, May 28–1853, Jun 10(32nd Congress, 1st session)
1853_21853, Dec 12–1854, Jan 25(33rd Congress, 1st session)
1854_11854, Jun 20–1854, Aug 2(33rd Congress, 1st session)
1855_11855, Jan 1–1855, Jan 11(33rd Congress, 2nd session)
1856_11856, Jan 28–1856, Nov 9(34th Congress, 1st session)
1856_21856, Dec 4–1857, Jan 6(34th Congress, 3rd session)
1857_11857, Dec 7–1858, Jan 7(35th Congress, 1st session)
1858_11858, Mar 1–1858, May 4(35th Congress, 1st session)


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