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[printed letterhead] No. [written] 660 [printed] Smithsonian Institution, Washington, D. C. [written] May 16 [printed] 18 [written] 57
My Dear Robert
I think it would be as well to take no birds but such as are very rare: you can do much better in the other departments. You can exchange your other collections without difficulty, for birds.
I wish you could spend such a season in Minnesota you are doing in S. Illinois. You would do a great work.
I was much amused with your "snake experiences". You worked that bully very well. I have no doubt from your description that the snake is a moccasin
I would like now to have as large a number of living species of serpents as you can