Asa Gray correspondence. Senders Co-Cu

By: Brandegee, Katharine Layne, - Cogniaux, Alfred, - Congdon, Joseph W., - Cooper, J. G. (James Graham), - Cooper, Sarah Paxson, - Cosson, E. (Ernest), - Coville, Frederick V. (Frederick Vernon) - Crépin, François, - Cusick, William C. (Willi