Monroe City Semi-Weekly News, May 24, 1921.
New marriage laws for Missouri effective June 19, 1921:
Section 7299 prohibits marriages between parents and children,
including grandparents and grand-children of every degree; between
brothers and sisters of the half as well as the whole blood; between
uncles and nieces and between aunts and nephews; first cousins;
white persons and Negroes or between white persons and Mongolians
and between persons of either whom is insane, mentally imbecile,
feeble-minded or epileptic are prohibited and declared absolutely
void; and it shall be unlawful for any city, county or state official
having authority to issue marriage license to issue such marriage
license to the persons heretofore designated and any such official
who shall issue such licenses to the persons aforesaid knowing such
persons to be within the prohibition of this section, shall be deemed
guilty of a misdemeanor; and this prohibition shall apply to persons
born out of lawful wedlock as well as those in lawful wedlock.