Russian Textbook Berets

Re-organizing my bookshelves, I came upon this old Russian textbook that I once used in an attempt to better my Russian. It didn't do much good, really, but flicking the pages, I found a few interesting pictures depicting a Basque beret.
I guess in the 1950's USSR the beret was seen as a proletarian workers headgear and acceptable for school textbook use.

Interestingly, both pictures show women wearing the beret; a postie delivering a letter to a school boy and one picture of what seems to be a teacher during some celebration.

All seem very happy and peaceful with their lives.