Artists and caricaturists published by Tregear included a member of the Cruikshank family of caricaturists, Isaac Robert Cruikshank.
Isaac Newton | Isaac Asimov | Isaac Stern | Isaac Hayes | Isaac | Isaac Bashevis Singer | Isaac Leeser | Heinrich Isaac | George Cruikshank | Isaac Singer | Oscar Isaac | Isaac Watts | Isaac Julien | Rabbi Isaac Elchanan Theological Seminary | Isaac Rosenberg | Isaac Levitan | Captain Isaac Biddlecomb | Binding of Isaac | Lucas Cruikshank | Isaac Stevens | Isaac Reed | Isaac of Armenia | Isaac Newton Group of Telescopes | Isaac Herzog | Isaac Deutscher | Isaac Casaubon | Isaac Brock | Isaac Barrow | Isaac Albéniz | Saint Isaac's Cathedral |