This is from the New York Times website:

After news of President Lincoln’s assassination reached New York, in all arteries and capillaries of the city, shopkeepers designed makeshift shrines to the martyred president. An anonymous diarist walked for miles, drawing sketches of as many storefronts as he could (evidence suggests, but does not confirm, that the diarist was a man). Through his relentless activity this nameless reporter made the news a bit more comprehensible. Here are selections from the diary entries. Click on the yellow icons for annotations by Ted Widmer. (McLellan Lincoln Collection, John Hay Library, Brown University)

You can see 26 pages from the diary here.