I'm with Phil. I think they're both novelizations of the film. Both titled 'Limelight.' The French is 287 pages with film photos included here and there. The German is 260 pages but no photos. Hakan, if you're interested, both are easy to find on used book databases and are fairly cheap.
www.addall.com is great because it shows you all the available books throughout the world, so you might start there.