22. 1930 – A Worker Hanging Out at the Empire State Building
Taking only 1 year and 45 days to build, the Empire State Building is a 102-storey skyscraper in New York City. For 40 years, it stood as the tallest building in the world. It took nearly 20 years for the building to become profitable, and was built mostly by European immigrants. Pictured here is one of the countless men who constructed the building.
21. 1961 – Ham the Chimp
Apart from a bruised nose, Ham the Chimp, or Ham the Astrochimp became the first Hominidae to go into space. He was launched from Cape Canaveral, Florida on the 31st of January, 1961, and returned in perfect health. He underwent 2 years of training at the Holloman Air Force Base. On completing his successful space mission, Ham lived out the final 17 years of his life in the National Zoo in Washington, D.C. He died in 1983, and his skeleton is held at the National Museum of Health and Medicine.