Primarily letters written by Brimmer to Sarah Wyman Whitman, written from London, Paris, Rome, and elsewhere, and referring to the Museum of Fine Arts, Boston, and to contemporary artists such as George Fuller, John LaFarge, William Morris Hunt, John Singer Sargent, and James A. McNeill Whistler. In addition, there are letters from Henry Lee Higginson, Owen Wister, and other friends of Brimmer, referring to Brimmer's death.
