by University of Minnesota

1914

by Minnesota Education Association

1902

by Minnesota. State Board of Control

1916

by Minnesota. Department of Education

1910

by University of Minnesota

1930

by Minnesota. Dept. of Education

1912

by Minnesota

1915

by Minnesota

1903

by Minnesota

1883

by Minnesota. Department of Education

1878

by Minnesota. Department of Public Instruction, Minnesota. Dept. of Education

1878

by Minnesota. Dept. of Public Instruction

1895