Here's a neat tidbit regarding Washington's birthday. In 1732, the date was February 11. The shift from the Julian to the Gregorian calender during the 1750s moved the date to Feb. 22.
I can recommend the book that this came from for those interested in the preservation and interpretation of historic sites.
Seth Bruggeman, Here, George Washington Was Born: Memory, Material Culture, and Public History of the National Monument University of Georgia Press, 2008
Considering the ongoing debates within the Civil War community regarding the alterations to the Gettysburg battlefield and the interpretations offered by the new visitor center, this is an interesting, relevant work on the topic of landscape and memory.
Co. B, 8th OVI, NR