SMGL-1907 German Steamship Pleasure cruise pass book/notebook dated 1908

Pretty neat item with what appears to be SS Kaiser Wilhelm der Grosse on the front. This line sailed out of Latvia and Rotterdam and travelled all over the world before ww1 broke out.
There is a notebook or entry book inside but nothing is filled out. It has a green front a rear cover that have torn out unfortunately. The exterior of the whole ting is made of canvas and has held up nicely.