BernardodeMierayPacheco(1713璽“1785)isrememberedtodaynotonlyascolonialNewMexico璽(TM)spreeminentreligiousartist,butalsoasthecartographerwhodrewsomeofthemostimportantearlymapsoftheAmericanWest.His璽oePlanoGeographico璽�oftheColoradoPlateauandGreatBasin,revisedbyhishandin1778,influencedothermapmakersforalmostacentury.Thisbookplacesthemanandthemapinhistoricalcontext,remindingreadersoftheenduringsignificanceofMierayPacheco.LaterSpanishcartographers,aswellasBaronAlexandervonHumboldt,CaptainZebulonMontgomeryPike,andHenrySchenckTanner,projectedorexpandedupontheSantaFecartographer璽(TM)simagery.Bysodoing,theyperpetuatedMierayPacheco璽(TM)smostnotablehydrographicmisinterpretations.NotuntilalmostseventyyearsafterMieradidJohnCharlesFr?(c)monttakethefieldandseeforhimselfwhitherthewatersranandwhithertheydidn璽(TM)t.