Yes sir you are correct....bildband is essentially meaning photo book. I cannot even find the publisher of the German version. I want to say an English one was done however......maybe through Schiffer pubs ? Don;t worry about it being in German if you do find a copy, everything is very clear via the pics.
Everything was done in German and then the rights were sold to US translators and distributors. I can think of the Munin Verlag, Podzun and several others that come to my small pee brain--

E