MCLE has just published its 2021 supplement to Federal Civil Litigation in the First Circuit, edited by Francis D. Dibble Jr. and Jeffrey E. Poindexter. I updated my chapter on Recognition and Enforcement of Foreign Judgment and Arbitral Awards. I did the update a while back, and of course it is already slightly out of date, but it will, I hope, be useful to you nonetheless! You can find the book at this link.