ch ot ▁family ▁don ated ▁to ▁the ▁U . S . ▁Forest ▁Service . ▁It ▁remains ▁the ▁only ▁National ▁Historic ▁Land mark ▁operated ▁by ▁that ▁federal ▁ag ency . ▁ ▁G iff ord ▁Pin ch ot ▁III , ▁grand son ▁of ▁the ▁first ▁G iff ord ▁Pin ch ot , ▁founded ▁the ▁Pin ch ot ▁University , ▁now ▁merged ▁with ▁Pres id io ▁Gr adu ate ▁School . ▁The ▁Pin ch ot ▁family ▁also ▁dedicated ▁The ▁Pin ch ot ▁Institute ▁for ▁Conserv ation , ▁which ▁maintain s ▁offices ▁both ▁at ▁Grey ▁Tow ers ▁and ▁headquarters ▁in ▁Washington , ▁D . C .. ▁The ▁Institute ▁continues ▁Pin ch ot ' s ▁legacy ▁of ▁conservation ▁leadership ▁and ▁sust ain able ▁forest ry . ▁ ▁See ▁also ▁ ▁Mount ▁Pin ch ot ▁( Mont ana ) ▁List ▁of ▁people ▁on ▁the ▁cover ▁of ▁Time ▁Magazine : ▁ 1 9 2 0 s ▁( Nov ▁ 2 3 , ▁ 1 9 2 5 ) ▁G iff ord ▁Pin ch ot ▁State ▁Park ▁a ▁Pennsylvania ▁state ▁park ▁in ▁York ▁County , ▁Pennsylvania ▁G iff ord ▁Pin ch ot ▁National ▁Forest , ▁a ▁United ▁States ▁National ▁Forest ▁in ▁Washington ▁National ▁Ir rig ation ▁Congress ▁Pin ch ot ▁South ▁Sea ▁Ex ped ition ▁ ▁Notes ▁ ▁References ▁ ▁Works ▁c ited ▁ ▁Bibli ography ▁ ▁Primary ▁sources ▁" Bre aking ▁New ▁Gr ound " ▁by ▁G iff ord ▁Pin ch ot .. ▁Har court ▁Bra ce ▁J ovan ov ich , 1 9 4 7 . ▁In ▁print ,