Retro Baltimore Trivia: What event was the 1968 Towson Bicentennial Celebration commemorating?

The Bard of Baltimore, for decades the proud wielder of America's most acerbic pen, was an Evening Sun mainstay for decades (which is why he's quoted on the wall of our Calvert Street lobby). But we'd include him even if he wrote for somebody else. (Robert F. Kniesche, Baltimore Sun photo)

A pile of stumps smolders after trees were cleared near the Sheppard Pratt gatehouse during the rerouting and widening of Charles Street in 1957. (Ellis Malashuk/Baltimore Sun)