Mary Parke McFerson (known as Parke), a childhood friend of Louisa Wylie Boisen’s, married John W. Foster who served in the Union Army during the Civil War and went on to become U. S. Minister to Mexico, then Russia and finally to Spain in the 1870s and 1880s. He served as U. S. Secretary of State under President Benjamin Harrison. Parke’s mother was Mrs. Eliza J. McFerson who served as principal of the Monroe County Female Seminary and then went to Glendale Female College in the 1850s to take up the post of assistant principal. Parke and Louisa kept up a correspondence for many years, and Parke’s letters to Louisa are now part of the Wylie House Museum archive. Her letters from Mexico in the 1870s are particularly interesting.