Look up, everyone, because it’s Skyscraper Day! Because they go up so quickly these days, it’s easy to forget just how much man power it takes to construct a skyscraper. Thousands of workers—like the riveters shown on this stamp—spent more than a year erecting one of America’s most iconic landmarks: the Empire State Building in New York City. We are in awe of their achievement. You can find this and other stamps showing Empire State Building workers on the Made in America stamp sheet, available now.