On June 17, 1821, John Johnston Markell, great grandson of John Thomas Schley and a portrait painter and landscape artist, was born in Frederick. He died December 2, 1844. On June 17, 1864, Adam Green, a resident of the Jackson District, was fatally shot by John N. Hartoon, a government detective who mistook Green for his brother, who had been drafted but failed to report for induction into the Union Army. On June 17, 1876, Westinghouse Air Brakes were first advertised for use on steam train engines in Brunswick. If anyone can add information to these History Moments, or would like to suggest an item for another calendar day, please contact me privately. John W. Ashbury (wasps65@earthlink.net)