Emily Dickinson - Letter 307 (March 1865) - no ms. Louise Norcross lyrics

Dear Sister, Brother has visited, and the night is falling, so I must close with a little hymn. I had hoped to express more. Love more I never can, sweet Dennie or yourself. This was in the white of the year That was in the green Drifts were as difficult then to think As daisies now to be seen - Looking back is best that is left Or if it be - before Retrospection is prospect's half Sometimes almost more - Emily.