If you think the office looks smaller than today’s Oval Office, you’re right. Creation of the Oval Office came 11 years after this photo, when President William Howard Taft expanded the permanent structure of the West Wing of the White House in 1909. On the right of the photo is the massive globe map of the world probably most famous from photos with Teddy Roosevelt, who succeeded to the presidency in 1901 when McKinley was assassinated.
People of New York idolized Lt. Gen. U. S. Grant. They gave Grant and his family a home. On June 7, 1865, he spoke at Cooper Union and got a rousing ovation in return.
In the spring of 1865, Grant made an appearance at Cooper Union in New York; the New York Times described the reception for the war hero: “…the enhanced and bewildered multitude trembled with extraordinary delight.”
Looking for details on that speech. Holler if you have some.