Administration Dates
March 4, 1861-March 4, 1865
March 4, 1865-April 15, 1865

Vice President
Hannibal Hamlin (1861-65)
Andrew Johnson (1865)

Cabinet
Secretary of State
William H. Seward (1861-65)

Secretary of the Treasury
Salmon P. Chase (1861-64)
William P. Fessenden (1864-65)
Hugh McCulloch (1865)

Secretary of War
Simon Cameron (1861-62)
Edwin M. Stanton (1862-65)

Attorney General
Edward Bates (1861-64)
James Speed (1864-65)

Secretary of the Navy
Gideon Welles (1861-65)

Postmaster General
Horatio King (1861)
Montgomery Blair (1861-64)
William Dennison Jr. (1864-65)

Secretary of the Interior
Caleb B. Smith (1861-62)
John P. Usher (1863-65)