The Baseball Hall of Fame & Museum is marking the country’s 246th birthday by remembering Lou Gehrig and his contributions to the game in honor of the 83rd anniversary of his Farewell Speech, which occurred on July 4, 1939. Several other special events are free with a paid admission.
Source:
https://baseballhall.org/events/Independence-day-and-the-anniversary-of-lou-gehrigs-farewell-speech