American builder Harry B. Helmsley, the designer of the Empire State Building, was born on this day in 1909.

Did you know that:

• Benjamin Waterhouse, a physician who tested the first smallpox vaccine, was born on this day in 1754
• The song “Happy Birthday To You” was first published by Claydon Sunny on this day in 1924
• Leonard Kasday was granted a patent for a method to handle telephone prize opportunities on this day in 1997