[stcromwell99]

John H. Chafee...................31 Jan 1969 - 4 May 1972
John W. Warner...................4 May 1972 - 8 Apr 1974
J. William Middendorf............8 Apr 1974 - 20 Jan 1977

http://www.history.navy.mil/faqs/faq37-1.htm

[stcromwell99]

Oops!

Secretaries of the Navy

John H. Chafee................31 Jan 1969 - 4 May 1972
John W. Warner................4 May 1972 - 8 Apr 1974
J. William Middendorf.........8 Apr 1974 - 20 Jan 1977