Who most likely is Mr. Jackson? [originaltext]M: We absolutely need to have this

M: We absolutely need to have this ready for publication by May,(65)so that it’s ready for the summer vacation catalog.
W: But that’s not really possible, Mr. Jackson; the final draft is not even finished.
M: I’ve been speaking to the author, and she says that she will be able to send the final draft to us by next Monday.(66)
W: In that case, as long as there are no holdups with the proofreader and we get the photos by the end of this month, we may be able to have it ready in time.(67)