On October 18, 1903, the first services in the sanctuary of Grace Reformed Church in Frederick were held. Because of the number of people who wanted to attend on this occasion, three services were conducted.
On October 18, 1919, Leo M. Creeger, a prominent Thurmont merchant, was shot and killed during a manhunt for a burglar that involved more than 300 county men and women. The suspect, Clarence S. Wallace, was shot and killed on December 14, 1919, by police in Santa Barbara, California.
On October 18, 1960, The Historical Society of Frederick County announced that the heirs of Marshall L. Etchison, who died April 30, 1960, had donated many of his valuable antiques and historical book collection to the society.
On October 18, 1971, President Richard M. Nixon announced the conversion of Ft. Detrick facilities to cancer research in a ceremony at the Army post. In 1969, Nixon had halted the development of offensive biological and chemical weapons at the post.