For reasons not clear, Lulu press has been extremely slow in filling orders. I have used this vendor for years, but lately it’s beyond frustrating. However, Discovering Nicholas Ackley now also is available from Amazon and from Barnes and Noble, both promising a relatively quick turn-around time. This may be a better option and I apologize to anyone who has been experiencing a long wait from Lulu (as have I!).
Barnes and Noble: https://www.barnesandnoble.com/w/discovering-nicholas-ackley-nancy-a-mattison/1140903016?ean=9781794786370