Rob McBride (Tree Hunter) unveiling the plaque to commemorate Sheffield s Tree Campaigners | Tree Hunter Rob McBride

#ICYMI we recently unveiled a commemorative plaque honouring @BBishopAirport’s 85 years of flight. This plaque joins @HeritageToronto’s 900 plaques across the city that educate and enlighten the public about important people, places, and events from Toronto’s past. With so much history to celebrate, this plaque will stand as a tribute to Billy Bishop Toronto City’s Airport’s 85 years of service, growth and dedication to our city and community. | Billy Bishop Toronto City Airport

A commemorative plaque for Stephen T. Mather, first director of the National Park Service, located in Great Falls Park in Virginia. The Potomac River's Mather Gorge is seen in the background.

Modern Commemorative Coins: A List Of U.S. Commemorative Coins (1982 - Present) And What They're Worth