Report of the Director to the Board of Trustees for the year ... / Chicago Natural History Museum.

1955

Annual report of the Director to the Board of Trustees for the year ... / Field Museum of Natural History

4, no. 1

Report of the Director to the Board of Trustees for the year ... / Chicago Natural History Museum.

1946

Report of the Director to the Board of Trustees for the year ... / Chicago Natural History Museum.

1963

Report of the Director to the Board of Trustees for the year ... / Chicago Natural History Museum.

1961

Reports of the Director ... / Experimental Farms.

1891

Reports of the Director ... / Experimental Farms.

19089

Reports of the Director ... / Experimental Farms.

1902

Reports of the Director ... / Experimental Farms.

1905

Reports of the Director ... / Experimental Farms.

1904

Annual report of the Director of the Bureau of Science ...

1913-1916

Reports of the Director ... / Experimental Farms.

1900

Reports of the Director ... / Experimental Farms.

1906

Reports of the Director ... / Experimental Farms.

1914pt.1

Reports of the Director ... / Experimental Farms.

1914pt.2