South Dakota State Capitol
... that, according to legend, each of the 66 men who laid the tile of the South Dakota State Capitol placed a blue stone in the floor as a personal signature?
... that, according to legend, each of the 66 men who laid the tile of the <b id="mwFHM"><a href="./South_Dakota_State_Capitol" id="mwFHQ" rel="mw:WikiLink" title="South Dakota State Capitol">South Dakota State Capitol</a></b> placed a blue stone in the floor as a personal signature?