
The image is a historical letter from the Pay Department in Washington, D.C., dated June 19th, 1865. It is addressed as "Dr. Sir" and acknowledges the receipt of a previous letter. The writer provides a corrected account related to payments, noting an error in the previously stated period of 18 months and 7 days at a rate of $6 per month. The writer highlights a mathematical mistake of $20, indicated in red ink, and explains that the correct total should be $666. An error in the markings and an overstatement of $26.64 are elaborated upon. The letter concludes with a correction in favor of the recipient amounting to $8.05.