Asa Gray correspondence. Senders Pa-Pl
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By: Gray, Asa, - Paine, John A. (John Alsop), - Pammel, L. H. (Louis Hermann), - Parish, Samuel Bosnall, - Parseval-Grandmaison, Jules, (Alexandre-Jules de), - Patterson, Harry N. (Harry Norton), - Perry, Matthew Calbraith, - Peters, Thomas M. (