Florida Florida portalUnited States portalHistory portal This category is for topics specifically related to the year 1866 in the U.S. state of Florida. 18611862186318641865186618671868186918701871 1810s1820s1830s1840s1850s1860s1870s1880s1890s1900s1910s Subcategories This category has only the following subcategory. / 1866 establishments in Florida (6 P)