Answer to Question # 2:

Perhaps the most tell-tale sign is the fact that the buildings appear to be so thin and flat. Masonry buildings, ones built of brick or stone, usually have thicker walls. This produces deeper openings around doors and windows and more shadow. The kind of building seen here, frame “two-flats” and “three-flats” along with small workers’ cottages (See section on building types for more information on these) are characteristic of the late nineteenth century. These buildings were typically occupied by families of modest incomes. 

Question # 3:

What evidence is there about the subsequent fate of this neighborhood?

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