Overview of the ship from its conception by John Ericsson through its short career as a warship, its loss in 1862, the discovery of its wreck in 1973, and current conservation efforts. From the Mariners' Museum.
Wikipedia: USS Monitor
User-generated article about USS Monitor, the ironclad warship designed by the Swedish engineer, John Ericsson.
Monitor National Marine Sanctuary
Protects the wreck of the famed Civil War ironclad. Includes virtual tour of the wreck, expedition reports, and research programs.
First Iron-Clad Monitor, The
Account of the construction of the Monitor written by Gideon Welles, Lincoln's Secretary of the Navy.
NOVA Online: Lincoln's Secret Weapon
Includes QTVR tour of rooms throughout the vessel, sailors' letters describing the Monitor's battle with the CSS Virginia at Hampton Roads, and description of how engines worked.