2021 National Law Enforcement Memorial and Museum	2021 American Indians in the U.S. Military	2021 New Hampshire - Ralph Baer, the Father of Video Games
2021 Virginia - The Chesapeake Bay Bridge-Tunnel	2021 New York - The Erie Canal	2021 North Carolina - The first public institution of higher learning in the United States
2021 125th Anniversary of the Klondike Gold Rush	2021 Blanding's turtle	2020 75th Anniversary of the Signing Of The United Nations Charter
2020 175th Anniversary of the Russian Geographical Society	2020 Basketball Hall of Fame	2020 Elizabeth Peratrovich and Alaska’s Anti-Discrimination Law
2020 Black-Footed Ferret	2020 The Fight for Women’s Suffrage	2020 Connecticut - Gerber Variable Scale
2020 Massachusetts - the invention of the telephone	2020 Maryland - Hubble Space Telescope	2020 South Carolina - Septima Poinsette Clark
2020 George H.W. Bush	2020 Historic Railways	2020 Historic Railways
2020 Historic Railways	2020 Historic Railways	2019 Nuclear Support Units of the Ministry of Defence of the Russian Federation
2019 50th anniversary of the decriminalization of homosexuality in Canada	2019 Pileated Woodpecker	2019 American Indians in the Space Program
2019 American Legion 100th Anniversary	2019 Apollo 11 50th Anniversary	2019 Delaware - The System for Slassifying the Stars - Annie Jump Cannon
2019 Pennsylvania - The creation of a vaccine to prevent polio	2019 New Jersey - The Development of a Lightbulb	2019 Georgia - The First Agricultural Experimental Garden in America
2018 100th Anniversary of Regaining Independence by Poland	2018 140 years since the union of Dobruja with Romania	2018 100 years since the union of Bessarabia with Romania