While searching for the pig, the boys are distracted by a wedding and other events, such as finding a secret cave.

The reason for this was that in the story was about a pig, that is embraced in the photos by Marko, which is considered in Judaism as not kosher.

On September 27, 1960 Lindgren traveled to Yugoslavia, where she first made holidays with Louise Hartung, before she met up with Anna Riwkin on October 4 to create the photo book.

First, the photo book should take place in Lovran, and later Riwkin decided to relocate it to Macedonia, as this still has something of the "original Balkan".

[6] After completing the series, Lindgren explained that while working with Riwkin-Brick was nice, she did not like the books, especially Marko Lives in Yugoslavia.