On July 30, 1802, Ezra Houck, second president of Farmers & Mechanics National Bank (1872-1878), was born.
On July 30, 1820, four Osage Indians passed through Frederick enroute to St. Louis after concluding a treaty in Washington.
On July 30, 1861, the Maryland General Assembly reassembled in Frederick following its April adjournment. The question of secession was the foremost issue on the agenda, yet no vote was ever taken.
On July 30, 1864, Decatur Dorsey, who was born at New London in Frederick County, was awarded a Congressional Medal of Honor for his actions at Petersburg, VA, on this date. The medal was presented November 8, 1865.
On July 30, 1949, President Harry S Truman, and members of his staff, arrived in Thurmont for a weekend visit to Shangri-La, now called Camp David.
On July 30, 1955, a new bridge, connecting Brunswick, Maryland, with the Virginia side of the Potomac River, was dedicated.