▁is ▁the ▁name ▁of ▁the ▁original ▁settlement ▁at ▁the ▁Y uma ▁Cross ing , ▁in ▁what ▁is ▁now ▁Y uma , ▁Arizona . ▁ ▁From ▁ 1 8 5 3 ▁a ▁small ▁settlement , ▁Arizona ▁City , ▁grew ▁up ▁on ▁the ▁high ▁ground ▁across ▁from ▁Fort ▁Y uma , ▁first ▁as ▁the ▁ad obe ▁residence ▁of ▁Mrs . ▁Bow man ▁the ▁fort ' s ▁mess ▁cook . ▁ ▁This ▁was ▁purchased ▁for ▁use ▁as ▁a ▁store ▁the ▁next ▁year ▁by ▁George ▁F . ▁Ho oper . ▁ ▁On ▁the ▁mail ▁route ▁with ▁the ▁arrival ▁of ▁the ▁San ▁Antonio - San ▁Diego ▁Mail ▁Line ▁in ▁ 1 8 5 7 , ▁and ▁the ▁But ter field ▁Over land ▁Mail ▁in ▁ 1 8 5 8 , ▁the ▁town ▁received ▁its ▁post ▁office ▁of ▁Arizona ▁with ▁its ▁first ▁post master ▁John ▁Bla ke ▁Dow ▁March ▁ 1 7 , ▁ 1 8 5 8 . ▁ ▁At ▁that ▁time ▁it ▁consisted ▁of ▁ad obe ▁dwell ings , ▁two ▁stores ▁and ▁two ▁sal o ons . ▁ ▁Origin ally ▁part ▁of ▁Do ña ▁Ana ▁County , ▁New ▁Mexico ▁Territ ory , ▁on ▁February ▁ 1 , ▁ 1 8 6 0 , ▁Arizona ▁City ▁became ▁part ▁of ▁Arizona ▁County , ▁New ▁Mexico ▁Territ ory . ▁ ▁Arizona ▁County ▁compr ised ▁all ▁the ▁land ▁of ▁the ▁G ads den ▁P urchase ▁west ▁of ▁a ▁line ▁close ▁to ▁the ▁current ▁New ▁Mexico ▁- ▁Arizona ▁border , ▁with ▁its ▁seat ▁at ▁T ub ac , ▁later ▁T uc son