This record catalog is probably the first one by Polydor, issued in 1948/1949, shortly after World WarII. Founded in 1913, Polydor was relaunched as Deutsche Grammophon’s popular music label in 1946. The booklet lists all records that were available at the time, in 78 rpm shellac format, featuring mainly schlager and other popular music. The table of contents mentions “melodies from sound films and revue operettas”, Christmas recordings, national anthems, and special recordings including “frequency records” (for testing purposes?), bell-ringing and “sound music”.
While the cover features script lettering as it’s typical for the era, the interior is set with a number of German pre-war typefaces. See more pages in Klaus Hiltscher’s Flickr album.