The Brothers Grimm traveled widely throughout Germany and other countries, performing field research for their linguistic work, which involved trying to find patterns in how the vowels and consonants which made up specific words changed over time. To determine these patterns, they needed to hear many different examples of authentic speech by various speakers of different ages and in different regions. They eventually discovered that one of the easiest ways to convince older local residents to give them lengthy examples of their natural speech was to ask the residents to tell their favorite stories to the brothers. As the Grimms Brothers recorded the style of speech of the speaker for their research (which eventually led to the formulation of Grimm's Law), they also recorded the various stories that they were told, and eventually published them in 1817.
