Here is the book you are probably thinking about: https://www.iuniverse.com/en/bookstore/bookdetails/775911-Imposters-in-the-Oval-Office
To All:
List of U.S. Presidents – Eligibility under Article II Grandfather Clause (GFC) or Natural Born Citizen (NBC) Clause or Seated due to Election Fraud: https://cdrkerchner.wordpress.com/2011/09/23/list-of-u-s-presidents-eligibility-under-article-ii-grandfather-clause-gfc-or-natural-born-citizen-nbc-clause-or-seated-due-to-election-fraud-3/
Robert C. Laity doesn’t sound like the name I remember.