Author of The Sample Slab, a catalog of sample slabs produced by PCGS, NGC, ICG, ANACS, and SEGS.
Per The Sample Slab foreword, "Isaiah Hageman is a member of the American Numismatic Association (ANA), Central States Numismatic Society (CSNS), Combined Organizations of Numismatic Error Collectors of America (CONECA), Michigan State Numismatic Society (MSNS), and the Cincinnati Numismatic Association (CNA). Isaiah has been collecting coins for 4 years now , and sample slabs for 2 years. He has also been published by CSNS, CNA, CONECA, BRNA, and MSNS. He is currently a monthly contributor for CNA, and a quarterly contributor for MSNS. He won the 2016 YN Literary Award from CSNS, and his work has been included in the Award Winning Publication “The Cincinnati Numismatist” (published by the Cincinnati Numismatic Association)."