May 21 – On this day in Montana history in 1956 Gov. J. Hugo Aronson called for a “highway litterbug cleanup campaign.” He said that state highway funds were limited and trying to deal with the problem took money away from other needed highway and bridge projects. He urged groups like the Jaycees to undertake a statewide campaign to clean Montana up. Perhaps showing how far ahead of his time he was, Aronson said it was just as important to keep Montana green as it was to keep its roadways clean.