.
Stati Uniti d'America
America U.S. Government
Dipartimento dell'Interno / Department of Interior (DOI)
Segretari dal 1849
Bureau of Indian Affairs (BIA)
Amministratori degli Affari Indiani 1789/1832
Sovrintendenti dell'Indian Trade 1806/1822
Sovrintendenti degli Indian Affairs Office 1824/1832
Commissari degli Indian Affairs 1832/1981
Assistenti Segretari dell'Interior for Indian Affairs dal 1977
Bureau of Land Management (BLM)
Surveyors General of the Northwest Territories 1796/1825
Commissari del General Land Office 1812/1946
Direttori del Grazing Service 1934/1946
Direttori del Bureau of Land Management dal 1946
Bureau of Reclamation
Capo dell'Engineer in Charge of the Service of Reclamation 1902/1907
Direttori del Service of Reclamation 1907/1923
Commissari del Reclamation dal 1923
U.S. Fish and Wildlife Service (FWS)
Commissari del Fish and Fisheries 1871/1903
Capi del U.S. Bureau of Fisheries 1903/1940
Capi del Bureau of Biological Survey 1885/1940
Direttori del Fish and Wildlife Service 1940/1957
Commissari del Fish and Wildlife Service 1957/1969
Capi del Bureau of Commercial Fisheries 1957/1970
Capi del Bureau of Sport Fisheries and Wildlife 1957/1974
Direttori dell'U.S. Fish and Wildlife Service dal 1974
U.S. Geological Survey (USGS)
Direttore del Geographical Surveys West of the 100th Meridian 1872/1879
Direttore del Geological Exploration of the Fortieth Parallel 1867/1879
Direttore dell'U.S. Geographical and Geological Survey of the Rocky Mountain Region 1869/1879
Direttore dell'U.S. Geological and Geographical Survey of the Territories 1867/1879
Direttori dell'U.S. Geological Survey dal 1879
National Park Service (NPS)
Sovrintendente del General and Landscape Engineer for the National Parks 1914/1915
General Superintendent of National Parks 1915/1916
Directors of the National Park Serivce dal 1917
War Relocation Authority (WRA)
Direttori 1942/1946
Dipartimento dell'Interno / Department of Interior 
Le Date:
3/3/1849
creazione del Departimento degli Interni
Segretari dal 1849
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Bureau of Indian Affairs (BIA) 
Le Date:
20/8/1789
Segretari della Guerra responsabili per gli American Indian Affairs
21/4/1806 - 6/5/1822
Office of Indian Trade entro il War Department
11/3/1824
rinominato Bureau of Indian Affairs entro il War Department
9/7/1832
creazione del Commissioner of Indian Affairs entro il War Department
29/7/1834
organizzazione dell'Office of Indian Affairs
3/3/1849
l'ufficio viene trasferito al Department of the Interior
17/9/1947
rinominato Bureau of Indian Affairs
Amministratori degli Affari Indiani 1789/1832
20 Aug 1789 | 9 Jul 1832 | i segretari alla guerra |
Sovrintendenti dell'Indian Trade 1806/1822
8 Jul 1806 | 1807 | John Shee |
1807 | 1816 | John Mason |
2 Apr 1816 | 6 May 1822 | Thomas L. McKenny |
Sovrintendenti degli Indian Affairs Office 1824/1832
11 Mar 1824 | 1830 | Thomas L. McKenny |
1830 | 1831 | Samuel S. Hamilton |
1831 | 9 Jul 1832 | Elbert Herring |
Commissari dell'Indian Affairs 1832/1981
10 Jul 1832 | 1836 | Elbert Herring |
4 Jul 1836 | 1838 | Carey A. Harris |
22 Oct 1838 | 1845 | T. Hartley Crawford |
28 Oct 1845 | 1849 | William Medill |
31 May 1849 | 1850 | Orlando Brown |
1 Jul 1850 | 1853 | Luke Lea |
24 Mar 1853 | 1857 | George W. Manypenny |
17 Apr 1857 | 1858 | James William Denver |
14 Jun 1858 | 1858 | Charles E. Mix (acting) |
8 Nov 1858 | 1859 | James William Denver |
4 May 1859 | 1861 | Alfred Burton Greenwood |
13 Mar 1861 | 1865 | William P. Dole |
10 Jul 1865 | Sep 1866 | Dennis Nelson Cooley |
1 Nov 1866 | 1867 | Lewis V. Bogley |
29 Mar 1867 | 21 Apr 1869 | Nathaniel Green Taylor |
21 Apr 1869 | 1871 | Ely S. Parker |
1871 | . | H.R. Clum (acting) |
21 Nov 1871 | 1872 | Francis A. Walker |
1872 | 1873 | H.R. Clum (acting) |
20 Mar 1873 | 1875 | Edward P. Smith |
11 Dec 1875 | 1877 | John Q. Smith |
27 Sep 1877 | 1880 | Ezra A. Hayt |
1880 | . | E.M. Marble (acting) |
15 Mar 1880 | 20 Apr 1881 | Rowland E. Trowbridge |
4 May 1881 | 1884 | Hiram Price |
21 Mar 1885 | 1887 | John D. Atkins |
10 Oct 1887 | 1889 | John H. Oberly |
10 Jun 1889 | 1893 | Thomas J. Morgan |
17 Apr 1893 | 1897 | Daniel M. Browning |
3 May 1897 | 1905 | William A. Jones |
7 Dec 1904 | 1909 | Francis E. Leupp |
16 Jun 1909 | 1913 | Robert G. Valentine |
2 Jun 1913 | 1921 | Cato Sells |
1 Apr 1921 | 1929 | Charles H. Burke |
1 Jul 1929 | 1933 | Charles J. Rhoads |
21 Apr 1933 | 1945 | John Collier |
1945 | 1948 | William A. Brophy |
1948 | 1949 | William R. Zimmerman (acting) |
1949 | 1950 | John R. Nichols |
1950 | 20 Mar 1953 | Dillon S. Myer |
10 Aug 1953 | 1961 | Glenn L. Emmons |
1961 | 1966 | Philleo Nash |
1966 | 1969 | Robert LaFollette Bennett |
1969 | 1972 | Louis R. Bruce, Jr. |
1973 | 1976 | Morris Thompson |
1976 | 1977 | Benjamin Reifel |
1977 | 1978 | Raymond Butler (acting) |
1978 | 1979 | Martin Seneca, Jr. (acting) |
1979 | 1981 | William E. Hallett |
Assistenti Segretari dell'Interior for Indian Affairs dal 1977
1977 | 1981 | Forrest J. Gerard |
1981 | . | Tom Fredericks (acting) |
1981 | 1984 | Kenneth L. Smith |
1985 | Jan 1989 | Ross Swimmer |
1989 | 1993 | Eddie Frank Brown |
Jul 1993 | 12 Nov 1997 | Ada E. Deer (f) |
12 Nov 1997 | 20 Jan 2001 | Kevin Gover |
20 Jan 2001 | 4 Jul 2001 | James H. McDivitt (acting) |
4 Jul 2001 | 6 Jan 2003 | Neal A. McCaleb |
6 Jan 2003 | 2 Feb 2004 | Aurene Michele Martin (f)(acting) |
2 Feb 2004 | 12 Feb 2005 | David Wayne Anderson |
12 Feb 2005 | 8 Mar 2007 | James "Jim" E. Cason (acting) |
8 Mar 2007 | 23 May 2008 | Carl J. Artman |
23 May 2008 | 22 May 2009 | George T. Skibine (acting) |
| 22 May 2009 | Larry EchoHawk |
Le Date:
8/7/1902
Service of Reclamation entro l'U.S. Geological Survey
9/3/1907
Reclamation Service entro il Department of the Interior
30/6/1923
rinominato Bureau of Reclamation
Capo dell'Engineer in Charge of the Service of Reclamation 1902/1907
1902 | 8 Mar 1907 | Frederick Haynes Newell |
Direttori del Service of Reclamation 1907/1923
9 Mar 1907 | Dec 1914 | Frederick Haynes Newell |
Dec 1914 | 19 Jun 1923 | Arthur Powel Davis |
19 Jun 1923 | 30 Jun 1923 | David William Davis |
Commissari del Reclamation dal 1923
30 Jun 1923 | 2 Jun 1924 | David Willaim Davis |
1924 | 26 Jan 1936 | Elwood Mead |
2 Feb 1936 | 1936 | Mae A. Schnurr (f) (acting) |
1936 | 1943 | John Catfield Page |
Aug 1943 | 1945 | Harry W. Bashore |
1945 | 1953 | Michael W. Straus |
1953 | . | Goodrich W. Lineweaver (acting) |
1953 | 1959 | Wilbur A. Dexheimer |
1 May 1959 | 1969 | Floyd E. Dominy |
1969 | 1973 | Ellis Leroy Armstrong |
1973 | 1977 | Gilbert G. Stamm |
1977 | . | Donald D. Anderson (acting) |
1977 | 1981 | R. Keith Higginson |
1981 | . | Clifford I. Barrett (acting) |
1981 | 1984 | Robert N. Broadbent |
Dec 1984 | Aug 1985 | Robert A. Olsen (acting) |
1985 | . | Clifford I. Barrett (acting) |
1986 | 6 Jul 1989 | Dale Duvall |
7 Jul 1989 | 13 Nov 1989 | Joe D. Hall (acting) |
14 Nov 1989 | 1993 | Dennis B. Underwood |
1993 | 1995 | Daniel Beard |
1995 | . | Stephen P. Magnussen (acting) |
1995 | 2001 | Eluid L. Martinez |
2001 | 17 Jul 2001 | J. William McDonald (acting) |
17 Jul 2001 | 14 Apr 2006 | John W. Keys III |
14 Apr 2006 | 17 Oct 2006 | William E. Rinne (acting) |
17 Oct 2006 | 2 Jan 2009 | Robert "Bob" W. Johnson |
| 2 Jan 2009 | 1 Jun 2009 | J. William "Bill" McDonald(acting) |
| 1 Jun 2009 | . | Michael L. Connor |
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Bureau of Land Management (BLM) 
Le Date:
18/5/1796 - 1825
creazione del Post of Surveyor General of Northwest Territories
25/4/1812
creazione del General Land Office (GLO) entro il Department of Treasury
3/3/1849
il GLO trasferito al Department of Interior
28/6/1934
creazione della Division of Grazing entro il Department of the Interior
1939
rinominato U.S. Grazing Service
16/7/1946
Bureau of Land Management (BLM) entro il Department of the Interior formato dall'unione del Grazing Service e del General Land Office
Surveyors General of the Northwest Territories 1796/1825
1 Oct 1796 | 1803 | Rufus Putnam |
3 Nov 1803 | 1813 | Jared Mansfield |
1813 | 11 Oct 1811 | Josiah Meigs |
11 Oct 1814 | 1825 | Edward Tiffin |
Commissari del General Land Office 1812/1946
7 May 1812 | 1814 | Edward Tiffin |
11 Oct 1814 | 1822 | Josiah Meigs |
11 Sep 1822 | 1823 | John McLean |
26 Jun 1823 | 1830 | George Graham |
30 Sep 1830 | 1835 | Elijah Hayward |
24 Jul 1835 | 1836 | Ethan A. Brown |
21 Oct 1836 | 1841 | James Whitcomb |
3 Jul 1841 | 1842 | Elisha M. Huntingdon |
19 May 1842 | 1845 | Thomas H. Blake |
16 Apr 1845 | 1847 | James Shields |
6 Jan 1847 | 1849 | Richard M. Young |
1 Jul 1849 | 1852 | Justin Butterfield |
16 Sep 1852 | 1855 | John Wilson |
6 Aug 1855 | 1859 | Thomas A. Hendricks |
13 Oct 1859 | 1860 | Samuel A. Smith |
23 Feb 1860 | 1861 | Joseph S. Wilson |
16 Mar 1861 | 1866 | James N. Edmunds |
1866 | 1871 | Joseph S. Wilson |
1871 | 1874 | Willis Drummond |
1874 | 1876 | Samuel S. Burdett |
1876 | 1881 | James A. Williamson |
17 Jun 1881 | 1885 | Noah McFarland |
1885 | 1887 | William A.J. Sparks |
1888 | 1889 | Strother M. Stockslager |
1889 | 1891 | Lewis A. Groff |
1891 | 1892 | Thomas Carter |
1892 | 1893 | William Stone |
1893 | 1897 | Silas W. Lamoreaux |
1897 | 1903 | Binger Hermann |
1903 | 1907 | William A. Richard |
1907 | 1908 | Richard A. Ballinger |
1908 | 1913 | Fred Dennett |
1913 | 1921 | Clay Tallman |
1921 | 1929 | William Spry |
1929 | 1933 | Charles Moore |
1933 | 16 Jul 1946 | Fred W. Johnson |
Direttori del Grazing Service 1934/1946
1934 | 1938 | Farrington "Ferry" R. Carpenter |
1938 | 1944 | Richard Rutledge |
1944 | 16 Jul 1946 | Clarence Luther Forsling |
Direttori del Bureau of Land Management dal 1946
16 Jul 1946 | 1948 | Fred W. Johnson |
1948 | 1953 | Marion Clawson |
1953 | 1961 | Edward Woozley |
1961 | 1963 | Karl Landstrom |
1963 | 1966 | Charles Stoddard |
1966 | 1971 | Boyd Rasmussen |
1971 | 1973 | Burton "Burt" W. Silcock |
1973 | 1977 | Curt Berklund |
1977 | 1981 | Frank Gregg |
1981 | 1989 | Robert F. Burford |
1989 | 1992 | Delos Cy Jamison |
1993 | 1994 | Jim Baca |
Feb 1994 | 1997 | Michael P. Dombeck (acting) |
1997 | 1998 | Patrick "Pat" A. Shea (acting fino al 23/7/1997) |
Nov 1998 | Nov 2001 | Thomas "Tom" A. Frye III (acting fino al 24/5/2000) |
Nov 2001 | Feb 2007 | Kathleen Burton Clarke (f) |
7 Feb 2007 | 3 Aug 2007 | James "Jim" M. Huges (acting) |
3 Aug 2007 | 20 Jan 2009 | James "Jim" L. Caswell |
| 20 Jan 2009 | 1 Mar 2009 | Ron Wenker (acting) |
| 1 Mar 2009 | Aug 2009 | Mike Pool (acting) |
| Aug 2009 | . | Robert V. Abbey |
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U.S. Fish & Wildlife Service (FWS) 
1917 - 1940

1940 - 19..

dal 19xx
Le Date:
9/2/1871
Fish and Fisheries Commission
1/7/1903
U.S. Bureau of Fisheries entro il Department of Commerce & Labor
4/3/1913
trasferita al Department of Commerce
30/6/1940
Fish and Wildlife Service entro il Department of the Interior
Commissari del Fish and Fisheries 1871/1903
1871 | 1887 | Spencer Fullerton Baird |
1887 | 1888 | George Brown Goode (acting) |
1888 | 1895 | Marshall McDonald |
1895 | 1896 | Herbert A. Gill (acting) |
1896 | 1898 | John J. Brice |
1898 | 1903 | George Meade Bowers |
Capi del U.S. Bureau of Fisheries 1903/1940
1903 | 1913 | George Meade Bowers |
1913 | 1922 | Hugh M. Smith |
1922 | 1933 | Henry O'Malley |
1933 | 1939 | Frank T. Bell |
1939 | 1940 | Charles Jackson (acting) |
Capi del Bureau of Biological Survey 1885/1940
(1885/1886 Office of Economic Ornithology and Mammalogy; 1886-1896 Division of Economic Ornithology and Mammalogy; 1896-1905 Division of Biological Survey)
1885 | 1910 | Clinton Hart Merriam |
1910 | 1916 | Henry Wetherbee Henshaw |
1916 | 1927 | Edward William Nelson |
1927 | 1934 | Paul Goodwin Redington |
1934 | 1935 | Jay Norwood Darling |
1935 | 1940 | Ira Noel Gabrielson |
Directors of the Fish and Wildlife Service
1940 | 1946 | Ira Noel Gabrielson |
1946 | 1953 | Albert M. Day |
1953 | 1957 | John L. Farley |
Commissioners of the Fish and Wildlife Service 1957/1969
1957 | 1961 | Arnie J. Suomela |
1961 | 1969 | Clarence F. Pautzke |
Chiefs of the Bureau of Commercial Fisheries 1957/1970
1957 | 1967 | Donald L. McKernan |
1967 | 1970 | Harold E. Crowther |
Capi del Bureau of Sport Fisheries and Wildlife 1957/1974
1957 | 1964 | Daniel H. Jantzen |
1964 | 1970 | John S. Gottschalk |
1970 | 1973 | Spencer H. Smith |
1973 | 1974 | Lynn A. Greenwalt |
Direttori dell'U.S. Fish and Wildlife Service dal 1974
1974 | 1981 | Lynn A. Greenwalt |
1981 | 1985 | Robert A. Jantzen |
1986 | 15 Mar 1989 | Frank H. Dunkle |
1989 | 1993 | John F. Turner |
10 Sep 1993 | 5 Jun 1996 | Mollie H. Beattie (f) |
31 Jul 1997 | 20 Jan 2001 | Jamie R. Clark (f) |
20 Jan 2001 | 21 Feb 2002 | Marshall Jones (acting) |
21 Feb 2002 | 16 Mar 2005 | Steven A. Williams |
16 Mar 2005 | 12 Oct 2005 | Matthew "Matt" J. Hogan (acting) |
12 Oct 2005 | Jan 2009 | H. Dale Hall |
| Jan 2009 | Aug 2009 | Rowan Gould (acting) |
| Aug 2009 | 20 Feb 2010 | Sam D. Hamilton |
| 21 Feb 2010 | . | Rowan W. Gould (acting) |
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U.S. Geological Survey (USGS)

bandiera dell'USGS

1906-19xx
Le Date:
3/3/1879
U.S. Geological Survey
1/7/1879
cessazione delle prime spedizioni
Direttore del Geographical Surveys West of the 100th Meridian 1872/1879
1872 | 30 Jun 1879 | George Montague Wheeler |
Direttore del Geological Exploration of the Fortieth Parallel 1867/1879
1867 | 1879 | Clarence Rivers King |
Direttore dell'U.S. Geographical and Geological Survey of the Rocky Mountain Region 1869/1879
1869 | 30 Jun 1879 | John Wesley Powell |
Direttore dell'U.S. Geological and Geographical Survey of the Territories 1867/1879
1867 | 30 Jun 1879 | Ferdinand Vandiveer Hayden |
Direttori dell'U.S. Geological Survey dal 1879
24 May 1879 | Mar 1881 | Clarence Rivers King |
Mar 1881 | 30 Jun 1894 | John Wesley Powell |
30 Jun 1894 | Apr 1907 | Charles Doolittle Walcott (acting fino al 1/7/1894) |
May 1907 | Dec 1930 | George Otis Smith |
Dec 1930 | 1943 | Walter Curran Mendenhall |
1943 | Jan 1956 | William Embry Wrather |
Jan 1956 | Sep 1965 | Thomas Brennan Nolan |
Sep 1965 | Apr 1971 | William Thomas Pecora |
1971 | Apr 1978 | Vincent Ellis McKelvey |
Apr 1978 | Jan 1981 | Henry William Menard |
30 Sep 1981 | 1993 | Dallas Lynn Peck |
24 Mar 1994 | 1997 | Gordon P. Eaton |
13 Nov 1998 | 20 Jun 2005 | Charles G. Groat |
20 Jun 2005 | 26 Sep 2006 | P. Patrick Leahy (acting) |
26 Sep 2006 | 20 Jun 2009 | Mark D. Myers |
| 22 Oct 2009 | Suzette M. Kimball (f) (acting) | |
| 22 Oct 2009 | Marcia Kemper McNutt (f) |
10 Jul 1914 | 9 Dec 1915 | Mark Daniels |
General Superintendent of National Parks 1915/1916
10 Dec 1915 | 31 Dec 1916 | Robert B. Marshall |
Directors of the National Park Serivce dal 1917
16 May 1917 | 8 Jan 1929 | Stephen Tying Mather |
12 Jan 1929 | 9 Aug 1933 | Horace Marden Albright |
10 Aug 1933 | 9 Aug 1940 | Arno Berthold Cammerer |
20 Aug 1940 | 31 Mar 1951 | Newton Bishop Drury |
1 Apr 1951 | 8 Dec 1951 | Arthur E. Demaray |
9 Dec 1951 | 7 Jan 1964 | Conrad L. Wirth |
8 Jan 1964 | 31 Dec 1972 | George B. Hartzog, Jr. |
1 Jan 1973 | 3 Jan 1975 | Ronald H. Walker |
4 Jan 1975 | 12 Jan 1975 | Russell E. Dickenson (acting) |
13 Jan 1975 | 27 May 1977 | Gary E. Everhardt |
28 May 1977 | 4 Jul 1977 | William J. Briggle (acting) |
5 Jul 1977 | 13 May 1980 | William J. Whalen III |
15 May 1980 | 3 Mar 1985 | Russell E. Dickenson |
4 Mar 1985 | 30 Apr 1985 | Mary Lou Grier (f) (acting) |
1 May 1985 | 15 Apr 1989 | William Penn Mott, Jr. |
16 Apr 1985 | . | Denis P. Galvin (acting) |
17 Apr 1989 | 20 Jan 1993 | James M. Ridenour |
20 Jan 1993 | 1 Jun 1993 | Herbert S. Cables, Jr. (acting) |
1 Jun 1993 | 29 Mar 1997 | Roger G. Kennedy |
30 Mar 1997 | 3 Aug 1997 | Denis P. Galvin + Jacqueline Lowery (f) (acting) |
4 Aug 1997 | 20 Jan 2001 | Robert Stanton |
17 Jul 2001 | 16 Oct 2006 | Fran P. Mainella (f) |
17 Oct 2006 | 20 Jan 2009 | Mary Amelia Bomar (f) |
| 20 Jan 2009 | 2 Oct 2009 | Daniel N. Wenk (acting) |
| 2 Oct 2009 | Jon Jarvis |
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War Relocation Authority (WRA)
Le Date:
18/3/1942
War Relocation Authority (WRA)
17/2/1944
trasferita al Department of the Interior.
30/6/1946
abolizione del WRA
Direttori 1942/1946
18 Mar 1942 | 17 Jun 1942 | Milton S. Eisenhower |
17 Jun 1942 | 30 Jun 1946 | Dillon S. Myer |
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