and albert a berg collection american literature. i worked in the library in the past in the rare book division. i worked as a curator at southern methodist university and downtown as well and i've had all of that led to my being here. >> how long have you been with the new york public library? >> as a curator i've been here since september of 2000. >> you have brought some things out to show us. >> yes, it's an enormous collection and there's lots of printed items and this is what i'd i like to call the tip of the iceberg. here we have the only surviving manuscript of what he has done in his own lifetime. it's not in his hand but in the hand of his personal assistant and this has the highest authority directly from his own manuscript. and you can see changes and differences between the text is represented here in the transcriptions or made in the first edition perpetuated throughout the centuries. for instance here in this sonnet, all of those will be resurrected on the day of judgment and this was only in the 20th century that it w