Vintage Photography Sunday

Found a scrapbook from Weimar-era Germany this weekend. In it were photographs from the Pressa Koln (Cologne) Exhibition of 1928. The international exhibition was a showcase for media and graphic design. One of the images is of a sculpture by Michail Plaksin and El Lissitzky done for the exhibition. I found a similar image, but mine seems to have been taken inside, and has the initials "Ka" on the front.