Diary entries, June 14–17, 1775. Private Nathaniel Ober, a shoemaker from Wenham, Massachusetts, marched to the Lexington Alarm on April 19, 1775. He served in Colonel John Mansfield's Massachusetts Regiment and kept a diary of his experiences from May 15–September 15, 1775.

Although Ober did not fight at Bunker Hill, he was keenly aware of the enormous cost to the British. In his entry for June 17, he wrote "So grait was the Fall of our Enemys. How are the mighty Falen."

The Ober diary passed down through the Ober family for more than two centuries. One of Private Ober¹s descendents gave it to the Massachusetts Historical Society in 1999.