April 19, 1865 funeral procession

[SSlater]

I suppose this is Lincoln's funeral procession over Pennsylvania Avenue on April 19, 1865. Where exactly?

Are there any photo's existing of the procession on which is a clearly view of the funeral car?

I know Mary Lincoln was not in one of the carriages, but was Tad?

The large building is not the Willard. The Willard is on the West side of 12th st. (The Willard would be the tiny corned of a building seen on the left edge of the picture). IF this is a picture of Washington.