18 : 1828 treaties|Treaties of the Kingdom of Saxony|Treaties of the Kingdom of Hanover|Treaties of the Electorate of Hesse|Treaties of the Grand Duchy of Saxe-Weimar-Eisenach|Treaties of the Duchy of Saxe-Altenburg|Treaties of Saxe-Coburg and Gotha|Treaties of the Duchy of Nassau|Treaties of Schwarzburg-Rudolstadt|Treaties of Schwarzburg-Sondershausen|Treaties of the Free City of Frankfurt|Treaties of the Duchy of Saxe-Meiningen|Treaties of the Duchy of Brunswick|Treaties of the Principality of Reuss-Gera|Treaties of the Principality of Reuss-Greiz|Treaties of Bremen (state)|Treaties of the Duchy of Oldenburg|Treaties of Hesse-Homburg