Peter Max, the pop artist and hippie icon who helped define the vibrant psychedelic style of the 1960s and whose work graced posters, album covers, T-shirts, dinnerware, postage stamps and beyond, has died. He was 88.Max died Monday at a Manhattan hospital, according to a statement provided to the New York Times by his son, Adam Max. No cause of death was provided, but Peter Max had been suffering from advanced dementia, according to the Associated Press.“We will remember his extraordinary creativity, his warmth, his curiosity, and the way he saw beauty and possibility everywhere,” Adam Max said in a...