I heard that men's pay got cut in half when women got the right to work. does this have some truth?

Women did not get the right to work but have always had it. Rights are what we do by right. It is folly to believe that a group of people are making less because a different group of people have started to compete for the same jobs. How much a person gets paid is, as it should be, contingent upon how much that person produces. There are circumstances, companies and organizations that may pay based on a different concept but they rarely last in a market place that only cares about quality at the best possible price.