The Brothers Grimm, who collected, committed to paper, and popularized many German folk tales, are considered some of the most famous folklorists in the world.

A number of their works were considered to be permanently lost following World War 2.

However, recent research at the Adam Mickiewicz University Library led to an unexpected discovery — specialists managed to find 27 original volumes with rare prints and unique editions. All of them are a valuable resource for researchers.