The German American Collection, The Album 8

In part 5 there was a dated beer keg, August 5, 1923, and in part 6 there was an older version of the couple pictured in this post. So, what time span can be found in this album? Note the mustache in the first picture. A style that would become popular, in Germany, in the 1930s, but would loose it's appeal in the mid 40s.