2020 South Carolina - Septima Poinsette Clark	2020 Maryland - Hubble Space Telescope	2020 Massachusetts - the invention of the telephone
2020 Connecticut - Gerber Variable Scale	2019 Delaware - The System for Slassifying the Stars - Annie Jump Cannon	2019 Georgia - The First Agricultural Experimental Garden in America
2019 New Jersey - The Development of a Lightbulb	2019 Pennsylvania - The creation of a vaccine to prevent polio	2018 American Innovators - Introductory Coin