However, as early as April 1970 those "leftover" poems were put aside for a different book which would come out some years later. Which was the title of that book?
Since Days was published in 1969 and since I'm guessing a majority of those "leftover" poems probably had to do with Jane, I'm going to guess "Burning in Water, Drowning in Flame" which is selected poems from 1955 through 1973.