Talk:Special routes of U.S. Route 12

Advice
Any advice on how to find descriptions for these special routes? Internet searching is not pulling anything significant. Thank you and all help is appreciated. AmericanAir88(talk) 19:31, 27 June 2019 (UTC)
 * I guess using Old Maps Online can help find some special routes that no longer exist.--AlphaBeta135 (talk) 23:15, 7 July 2020 (UTC)