by New York (State). Division of Industrial Hygiene

1924

by New York (N.Y.). Department of Health

1913

by New York (State). Legislature. Senate

1916

by New York (State). Department of Labor

1913

by New York (State). Legislature. Assembly

1918

by New York (State). Division of Industrial Hygiene

1921

by New York (State). Civil Service Commission

1916

by New York (State). Department of Civil Service

1915

by New York (State). Bureau of Labor Statistics

1913

by New York (State). Department of Labor

1918

by New York (State). Dept. of Labor

1927

by New York (State). Industrial Commission

1916