I’ve just added references for each of the three parts of the 1987 Critics Choice Files Magazine Spotlight that focus on the Alan Moore issues of Swamp Thing.  I haven’t really had a chance to read these books yet but they look somewhat interesting.  They are quite heavy with images reproduced from the comics, and some of the pieces are little more than brief summaries, but they occasionally offer some interesting insights, especially in the final book authored by Van Hise.  The first 2 parts also seem to have original cover art but the artist is uncredited.