The value of their friendship was first disclosed by a friend of Carr's, clergyman and writer G. Wharton James. After obtaining copies of their private letters from Carr, and despite pleadings from Muir to return them, he instead published articles about their friendship, using those letters as a primary source. In one such article, his focus was Muir's debt to Carr, stating that she was his "guiding star" who "led him into the noble paths of life, and then kept him there".
