I have in my possession earlier copies of Ebony-one dated April, 1969. Is it worth anything?

I also have others-one with George Forman, his wife and brand new baby girl-dated April, 1973. One dated August, 1975. It has the write up on The Bicentennial: 200 Years of Black Trials and Triumphs. Some of the magazines have the actual pictures of John F. Kennedy just after he was shot. I would like to know if these magazines are a real collector's item?