Timeline ... for the book project ...

We have a month in which to get the information. So, if you have something you would like published with your byline as a collaborating/contributing author, you've got about that amount of time.

Anything received after the deadline could be added to a subsequent book or some other type of document, but there comes the point at which I must send this project out to get it in the publishing queue.

Waiting for latecomers would hold up the whole book. So I won't do that. The deadline will be the deadline.