. . . . . . . . . . . . . "Letters received illustrate Appleton's interests in the Panama Canal, the unification of weights, measurements and coinage, the Grand Army of the Republic, the protection of animals, and other local, national and international projects. Correspondents include Édouard Frignet-Despréaux, Alexander H. Bullock, James Thomas, Annie Fields, Parke Godwin, J.E. Hilgard, Abram S. Hewitt, John F.W. Ware, Eben Tourjée, Samuel A. Green, Henry F. French, Hugh O'Brien, Juan Manuel Macías, Alexander Hamilton Rice, Leone Levi, William Wallace Crapo, Henry L. Dawes, William Claffin, Edward Everett Hale, Henry Bergh, George T. Angell, Frederick A.P. Barnard, John W. Forney, Rufus S. Frost, Thomas Wallace Knox, William Barton Rogers, Francis Parkman, Alexander Graham Bell, R.B. Forbes, Edmonia Lewis, James Jackson Jarves, Halsey Cooley Ives, William Maxwell Evarts, Charles William Eliot, Henry Cabot Lodge, William Warren, Frederick O. Prince, F.W. Putnam, Robert C. Winthrop, and others."@en . . "Letters received"@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Panama Canal (Panama)" . .