Its entrance at Fort McHenry is a channel 600 ft.
There are also prisoner of war records for Andersonville and Fort McHenry, battle descriptions and regimental histories.
In the War of 1812 Frederick, Havre de Grace, and Frenchtown were burned by the British; but particularly noteworthy were the unsuccessful movements of the enemy by land and by sea against Baltimore, in which General Robert Ross (c. 1766-1814), the British commander of the land force, was killed before anything had been accomplished and the failure of the fleet to take Fort McHenry after a siege of a day and a night inspired the song The Star-spangled Banner, composed by Francis Scott Key who had gone under a flag of truce to secure from General Ross the release of a friend held as a prisoner by the British and during the attack was detained on his vessel within the British lines.
The average elevation above sea-level is about 600 ft.; the highest elevation is Charles Mound (1257 ft.), on the IllinoisWisconsin boundary line, one of a chain of hills that crosses Jo Daviess, Stephenson, Winnebago, Boone and McHenry counties.