Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Name | State | Status | Title | Appointment | Credentials Presented |
| --- | --- | --- | --- | --- | --- |
| Henry F. Grady | California | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | Apr 10, 1947 | Jul 1, 1947 |
| Loy W. Henderson | Colorado | Foreign Service officer | Ambassador Extraordinary and Plenipotentiary | Jul 14, 1948 | Nov 19, 1948 |
| Chester Bowles | Connecticut | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | Oct 10, 1951 | Nov 1, 1951 |
| George V. Allen | North Carolina | Foreign Service officer | Ambassador Extraordinary and Plenipotentiary | Mar 11, 1953 | May 4, 1953 |
| John Sherman Cooper | Kentucky | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | Feb 4, 1955 | Apr 9, 1955 |
| Ellsworth Bunker | Vermont | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | Nov 28, 1956 | Mar 4, 1957 |
| John Kenneth Galbraith | Massachusetts | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | Mar 29, 1961 | Apr 18, 1961 |
| Chester Bowles | Connecticut | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | May 3, 1963 | Jul 19, 1963 |
| Kenneth B. Keating | New York | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | May 1, 1969 | Jul 2, 1969 |
| Daniel P. Moynihan | New York | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | Feb 8, 1973 | Feb 28, 1973 |
| William B. Saxbe | Ohio | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | Feb 3, 1975 | Mar 8, 1975 |
| Robert F. Goheen | New Jersey | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | Apr 26, 1977 | May 26, 1977 |
| Harry G. Barnes, Jr. | Maryland | Foreign Service officer | Ambassador Extraordinary and Plenipotentiary | Oct 1, 1981 | Nov 17, 1981 |
| John Gunther Dean | New York | Foreign Service officer | Ambassador Extraordinary and Plenipotentiary | Aug 2, 1985 | Sep 6, 1985 |
| John R. Hubbard | California | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | Nov 22, 1988 | Dec 27, 1988 |
| William Clark, Jr. | District of Columbia | Foreign Service officer | Ambassador Extraordinary and Plenipotentiary | Oct 10, 1989 | Dec 22, 1989 |
| Thomas R. Pickering | New Jersey | Foreign Service officer | Ambassador Extraordinary and Plenipotentiary | Apr 6, 1992 | Aug 14, 1992 |
| Frank G. Wisner | District of Columbia | Foreign Service officer | Ambassador Extraordinary and Plenipotentiary | Jun 9, 1994 | Aug 2, 1994 |
| Richard Frank Celeste | Ohio | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | Nov 10, 1997 | Nov 28, 1997 |
| Robert Blackwill | Kansas | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | Jul 12, 2001 | Sep 14, 2001 |
| David Campbell Mulford | Illinois | Non-career officer | Ambassador Extraordinary and Plenipotentiary | Dec 12, 2003 | Feb 23, 2004 |
| Timothy J. Roemer | Indiana | Non-career appointee | Ambassador Extraordinary and Plenipotentiary | Jul 23, 2009 | Aug 11, 2009 |
| Albert Peter Burleigh | California | Foreign Service officer | Charge d'affaires | June 2011 | Left post 2012 |
| Nancy Jo Powell | Iowa | Foreign Service officer | Ambassador Extraordinary and Plenipotentiary | February 7, 2012 | April 19, 2012 |
Question:
What day were credentials presented for vermont?
Answer:
Mar 4, 1957