Texas 1820s1830s1840s1850s1860s1870s1880s1890s1900s1910s1920s United States portal Subcategories This category has the following 11 subcategories, out of 11 total. 0–9 1870 in Washington Territory (1 C) 1871 in Washington Territory (1 C) 1872 in Washington Territory (1 C) 1873 in Washington Territory (1 C) 1874 in Washington Territory (1 C) 1875 in Washington Territory (1 C) 1876 in Washington Territory (1 C) 1877 in Washington Territory (1 C) 1878 in Washington Territory (1 C) 1879 in Washington Territory (1 C)E 1870s establishments in Washington Territory (10 C, 1 P)