▁understanding ▁that ▁we ▁would ▁give ▁them ▁ ñ ip as , ▁which ▁is ▁what ▁they ▁call ▁our ▁clothes . ▁They ▁later ▁went ▁into ▁the ▁woods ▁and , ▁in ▁less ▁than ▁three ▁hours , ▁brought ▁us ▁a ▁substantial ▁amount ▁of ▁game ▁that ▁we ▁took ▁in ▁exchange ▁for ▁cloth ." ▁ ▁Port ol á ▁expedition ▁up ▁the ▁California ▁coast ▁On ▁July ▁ 1 4 , ▁ 1 7 6 9 , ▁Cost ans ó ▁set ▁out ▁from ▁San ▁Diego ▁with ▁a ▁party ▁of ▁ 7 4 ▁men ▁on ▁the ▁Port ol á ▁expedition ▁to ▁locate ▁Mon ter ey ▁Bay . ▁The ▁party ▁included ▁lieutenant ▁Pedro ▁F ages ▁with ▁his ▁Catal an ▁volunte ers ; ▁captain ▁Fernando ▁River a ; ▁le ather - jack et ed ▁soldiers ; ▁Christian ▁Indians ▁from ▁B aja ▁California ; ▁and ▁fri ars ▁Juan ▁C resp í ▁and ▁Francisco ▁Gó mez . ▁The ▁party ▁failed ▁to ▁find ▁Mon ter ey ▁Bay . ▁According ▁to ▁governor / comm ander ▁Port ol á , ▁Cost ans ó ▁— ▁as ▁well ▁as ▁F ages ▁and ▁River a ▁— ▁ur ged ▁him ▁to ▁search ▁farther ▁north ▁for ▁Mon ter ey . ▁Cost ans ó ' s ▁ten acity ▁enabled ▁him ▁to ▁reach ▁San ▁Francisco ▁Bay , ▁which ▁he ▁became ▁the ▁first ▁person ▁to ▁map ▁profession ally . ▁ ▁Al ong ▁the ▁way , ▁Cost ans ó ▁observed ▁plants , ▁animals ▁and ▁the ▁local ▁astronom y , ▁recording ▁his ▁find ings ▁in ▁his ▁di ary ; ▁he ▁also ▁noted ▁details ▁about ▁the ▁Indians ' ▁custom s