NEW YORK (PIX11) — Have you ever noticed how some street signs in New York City are green while others are brown and some are blue? For instance, Park Avenue in Midtown Manhattan is marked by a ...

The larger blue street signs are a reference to the “humpback” style of signage that date from the 1910s to the 1930s. The brown signage was introduced in 1989 to demarcate historic districts ...

The larger blue street signs are a reference to the “humpback” style of signage that date from the 1910s to the 1930s. The brown signage was introduced in 1989 to demarcate historic districts ...

And in 1989, the city began installing brown street signs with white lettering to designate historical districts. Street signs have served as a medium for artists in the past. In March 2013 ...

This photo from Dec. 1, 1971, shows an incorrectly installed street sign at the corner of Osos and Islay streets. This was the brown-and-white sign with the Series E font that was prior to the ...