TLS, one page, 7.25 x 10.25, personal letterhead, May 2, 1963. Letter of thanks to the New York State Museum regarding samples Rockwell was loaned to study. In part, “Under separate cover I am sending the wood thrush specimens and color plates. I can’t begin to thank you for your thoughtfulness and cooperation…But in the meantime you should have these, as it has worried me to have them here.” Rockwell adds a handwritten postscript, “As I said above this does not even begin to thank you for your interest and help. I think you will find everything in order in the box. N. R.” In fine condition. R&R COA.