Should I get an attribution here?

I made a timeline of all the people in We Didn't Start the fire when Bridget Bardot passed away. It got popular and put in newspaper stories. Then three weeks later Nathan Yau makes a timeline of all the people in We Didn't Start the Fire and uses the Bardot passing hook my graph had. But he never mentions my graph His graph has a few ideas I am going to take to improve my next version. And Yau…