Akkurat, recently released by Lineto, is not an exact match but has some of the flavor of this sample, too.

http://www.lineto.com

Yes, FF Bau certainely comes closest with the wide caps and angled t-ascender, but still it has different ear of g and some proportions.

I would like to see the original samples of Schelter & Giesecke grotesk.

Here is another sample from a 1963 print:

I found out that the t an k suddenly change in the 1928 book:

Now these two samples seem more like same family, but the r is still puzzling.

Oooh, lovely. I don't know what it is, but have you
already taken a look at FF Bau?

BTW killer "a" and "g"!