Depending upon where you live, you might be able to get first hand information from an elderly person. When I was an activities director at a nursing home in Tulsa, Oklahoma, I once asked a roomfull of our residents how many of them had picked cotton in their lives. Almost all of the people-about 50-raised their heads or nodded. Only one lady happened to be not white. I then asked them to tell about it. There were some young people there that day who learned quite a bit.