Have a look at those links, you will find the light curve of the first eclipsing binary discovered by Arab astronomers long time ago (Algol, beta Persei)
http://www.hposoft.com/Astro/PEP/algol.html
http://www.britannica.com/eb/art-45046?articleTypeId=1
http://www.solstation.com/stars2/algol3.htm