The Jesuit Relations provide important accounts of interactions between Jesuit missionaries and indigenous peoples in North America between the 16th and 18th centuries. The Jesuits lived in native villages for years, learning local languages and customs. As inveterate writers, they provided detailed observations, though they did not always understand or approve of indigenous religious practices. Their writings describe topics like native and European approaches to medicine, diplomacy, warfare, and prominent figures like the martyred missionary Isaac Jogues. One account provides an especially descriptive and even-handed record of Father Marquette's voyage down the Mississippi River in the late 1600s.