The moment I saw Thomas Allin's Christ Triumphant: Universalism Asserted as the Hope of the Gospel on the Authority of Reason, the Fathers, and Holy Scripture, I knew I needed to read it.
I got my copy — a reviewer's copy, free of charge from the publisher, to be clear; thank you — last night and will update you as soon as I have reached a convenient stopping point. My keenness and my glacial reading pace will be at war with one another.
It is not, to be sure, a new book. It dates to 1885, and I've seen ads for it in old Universalist newspapers. But this edition is annotated by Robin A. Perry (well known among Universalist Christians under his pseudonym Gregory MacDonald ) and that makes it something else. Follow my page count, if you like, here.