The Union Fair is an annual agricultural fair in Union, Maine. It began in 1869 and, since 1886, all fairs in Knox County have taken place in Union. No fair was held in 1917–18, 1942–45 nor 2020. References Further reading The First Century — Union Fair 1869–1969 by Donald and Marion Mattoon External links Union Fair - Official site Fairs in the United States Recurring events established in 1869 Tourist attractions in Knox County, Maine 1869 establishments in Maine Union, Maine