Looks like you’ve tagged each street with start_date:edtf=[..1875]. This says we’re very sure that the street was built on or before 1875. Do we know that? I figured the 1875 was completely arbitrary, since it predates the New York City consolidation. If so, [1875..] would be more likely, but 1875? would also bring home the point that this year is not to be relied on.