These two volumes are a complete set of one of the most widely read series of stories about the American pioneer families. The presentation is consistent with the Library of America's intention to collect important fiction and non-fiction in permanent, high-quality editions. The volumes include a 20-page chronology of the life of Laura Ingalls Wilder, which helps set the context of the stories, and notes about things and people mentioned in the stories that might not be familiar to today's reader (for example, quotes of lines from songs of the period).
These books are an attractive set of an important part of American literature, intended for adult readers (much like the recently issued LoA set of science fiction novels of the 1950s). Young readers might start with paperback editions (though they will cost more in total than this set if the copies are new).