Croker gathered these stories through firsthand accounts and oral traditions, documenting a wide range of tales involving fairies, spirits, and other mythical beings. The collection includes narratives about encounters with fairies, their habits, customs, and interactions with humans. These stories provide insights into the cultural beliefs and superstitions of rural Ireland during the 19th century. Croker's work contributed significantly to the preservation and understanding of Irish folklore, influencing later writers and scholars interested in Celtic mythology and folk traditions. His meticulous recording of these tales helps to showcase the rich oral tradition and imaginative storytelling that were integral to Irish rural life.