On August 15, 1855, fire destroyed "Monocacy Mills" in Buckeystown, owned by Theodore C. Delaplaine. Approximately half of the loss was insured.Delaplaine rebuilt anyway.
On August 15, 1955, Robert Edmondston Delaplaine, oldest son of the founder of The News and publisher of The News and The Frederick Post, died at Johns Hopkins Hospital in Baltimore.
On August 15, 1979, The Homewood Retirement Center, located in the former Francis Scott Key Hotel in downtown Frederick, officially opened although two residents had moved into the facility two days earlier.
On August 15, 1994, A. Samuel Koski, a member of the Frederick County Board of Education, who devised a preventative maintenance manual for the school system, died suddenly at his AOKay Farm near New Windsor. He was 71.