green lake irwin’s hosts free celebration national dairy month byâ shelly najjar yesterday monday june 27 2011 green lake residents celebrated national dairy month green lake location irwin’s neighborhood bakery cafe 301 65th st people visited irwin’s 2 pm 3 pm received choice free milk sized lattes chocolate chip cookies participants loved fun neighborhood atmosphere event posed milk moustaches celebration national dairy month existence 1937 called national milk month created promote consumption surplus milk today people celebrate