Amongst his other illustrations are some notable ones for Miguel de Cervantes' classic novel, Don Quixote de la Mancha.
Isaac Newton | Robert Louis Stevenson | Robert De Niro | Robert E. Lee | Isaac Asimov | Robert Mugabe | Robert Redford | Robert Burns | Robert Bosch GmbH | Robert | Robert A. Heinlein | Robert Schumann | Robert Browning | Robert Rauschenberg | Robert Plant | Isaac Stern | Robert Altman | Robert Mitchum | Robert Frost | Robert Southey | Robert F. Kennedy | Robert Maxwell | Robert Graves | Isaac Hayes | Robert E. Howard | Robert Fripp | Robert Fisk | Robert Rodriguez | Robert Motherwell | Robert Lowell |
Artists and caricaturists published by Tregear included a member of the Cruikshank family of caricaturists, Isaac Robert Cruikshank.