The rules I'm using to establish if a work not originally published as a monograph, but which ultimately took some monographic form, indeed counts as a monograph in the "great books" project have changed slightly over the course of the year; and some exceptions have popped up.
Examples of Rule(s):
Ezra Pound's Cantos is the most-glaringly obvious of those works consisting of several monographs and, in this case, works published in periodicals as well. Leaves of Grass is another example that stands out, but for a different reason: a work that changed considerably over the course of nearly four decades. One of our listmakers, Harold Bloom, prefers to list two editions of the work.
Plays are counted as monographs even when originally published in anthologies, such as George Bernard Shaw's Candida, Arms and the Man, and You Can Never Tell, all three published as Plays Pleasant .
Two J D Salinger works, Franny and Zooey  and Raise High the Roof Beam, Carpenters and Seymour: An Introduction , as their titles hint, each consist of two stories originally published separately, all in the New Yorker magazine. Since they were published as two monographs by the author himself, and those editions have become the standard versions, they count here as monographs. The same goes for Sherwood Anderson's Winesburg, Ohio--but the rule's applicability in that case is more obvious, as only ten of the 22 stories had been published prior to the book being developed and published.
Examples of Exceptions:
Charles Lamb's Essays of Elia were published serially, 1820-25, but since they were soon published in book form, as Essays of Elia  and Last Essays of Elia , those works count as monographs. So far, not an exception. The problem comes in that the three pertinent listmakers (Baldwin, Powys, and the Jasper Lee Company) only list Essays of Elia. Since the phrase, "essays of Elia," often refers to all of the essays (that is, both anthologies) we can't say for certain that only the first book is being listed. I've decided to include both.
William Butler Yeats's Autobiography is included in two lists (Magill and Fadiman). We know from the description in the book that the later (1955) version is what's included in Magill's list; for Fadiman's, we're not sure. That later version consisted of six different monographs; an earlier, 1938 version included only three of them. Given that the contents of the book changed; and surely could change in the future, with the addition perhaps of other autobiographical works, however minor, I'm including all six works separately. This is an exception because we want to give priority to a work's final manifestation, while making note of its original place of publication and title changes, or titles of constituent works (as in Pound's Cantos above). An important consideration here is that the later version of the Autobiography is a posthumous compilation.