A tiny obscure team of parks workers is responsible for the upkeep of hundreds of New York City’s most famous landmarks — and it’s racing the clock these days.

The crew of six — solely responsible for the cleaning, repair and conservation of hundreds of historic monuments as part of the city’s small but mighty Monuments Conservation Program — is trying to finish up its necessary outdoor work before Old Man Winter blows in.

“There’s a lot of work to do,” public-art conservator and leader John Saunders told The Post.

The Parks Department workers are tasked with regularly cleaning more than 800 monuments, which are regularly damaged from the elements, pigeons, car exhaust and vandals, Saunders said.

“It’s not just bronze or statuary – the collection includes things like the Unisphere, the

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