tall unidentified being enters home - N.Y.C. 1957

encounter with being. appx.6'5", tight grey suit, surrounded by grey haze, entered home, wisping noise upon entrance to house like wind blowing leaves. heavy steps up to second floor apartment. stood at top of stairs, observed mother & awake infant. shined single solid beam of light that bifurcated into two beams halfway down its path onto mother and newborn infant. unexplained rashes resulted for weeks later all over infant, under arms, neck, back, and shoulders of mother. mother now deceased (2001). She insisted on all particulars of this event over many years. incident lasted about 2 hours.   oddly, similar incident occurred again in 1978 to mother and second teenage son at new residence Monticello/Pine Bush, NY. (?!@#$%^?).
Date is approximate.  PD