Updated language for crediting of correspondence annotations

 In order to more accurately reflect how annotations are written and adapted for the correspondence, we have updated the language that appears in the metadata at the top of certain transcription files. For letters in which we have incorporated and adapted annotations that appeared in other sources, we now say:

Notes for this letter were created by Whitman Archive staff and/or were derived from Dear Brother Walt: The Letters of Thomas Jefferson Whitman, ed. Dennis Berthold and Kenneth M. Price (Kent, OH: Kent State University Press, 1984), and supplemented or updated by Whitman Archive staff.

The citation changes, of course, depending on the source.

- Kevin