by Colorado. University

1927

by Colorado. Office of the Superintendent of Public Instruction, Colorado. Department of Public Instruction

1925

by University of Colorado

1927

by University of Colorado (Boulder campus)

1916

by University of Northern Colorado

1920

by University of Colorado Boulder

1916

by University of Colorado Boulder

1920

by Colorado. Governor

1926

by Colorado Agricultural Experiment Station

1919

by Colorado. Legislative Assembly. House of Representatives

1915

by University of Colorado

1914

by Colorado. State Board of Health

1925