So Harry is going to have a grand time finding and getting Sue the T.Rex out of the Field Museum in the future book(s). She is in the process of moving into her own suite at the end of the Triassic Era exhibit deeper in the building...
https://www.fieldmuseum.org/blog/meet-sues-new-neighbors-hall-dinosaursIn the month of June 2018, I visited the museum only to be slightly disappointed that instead of Sue, there's now a Titanosaur taking up half the back lobby (which apparently just finished it's move there in May). I finally found her suite, but unfortunately it was still under construction, and I could only see her partial skeleton through a peep hole.
I'm not sure how long the whole switch-over has lasted (and is scheduled to unveil in Spring 2019), but if Harry times his visit for Sue's resurrection, it's hopefully before 2018. And if he visits the Field Museum past 2018, I'm going to enjoy Harry's antics in getting a massive T.Rex through the hallways like a wrecking ball...
I wonder also if Harry will be more capable in the future with necromancy and just resurrect the rest of the dino bones.