Original sentence: Joseph Henry Allen (August 21, 1820 - 1898) was a Unitarian scholar, born in  Northborough, Massachusetts; graduated at Harvard College in 1840; and at the Divinity School in 1843
Edited sentence: Joseph Henry Allen (August 21, 1820 – 1898) was a Unitarian scholar, born in  Northborough, Massachusetts; graduated at Harvard College in 1840; and at the Divinity School in 1843