▁sides ▁of ▁each ▁opening , ▁while ▁above ▁each ▁opening ▁he ▁placed ▁a ▁relief ▁dep ict ing ▁a ▁scene ▁from ▁By ron ' s ▁Maz e ppa '' ▁in ▁which ▁wol ves ▁ch ase ▁a ▁wild ▁horse ▁to ▁which ▁the ▁n aked ▁Ivan ▁Maz ep a ▁is ▁bound . ▁ ▁These ▁sculpt ures ' ▁origin ▁is ▁uncertain ; ▁they ▁may ▁well ▁have ▁been ▁transport ed ▁from ▁an ▁Eastern ▁found ry ▁with ▁which ▁he ▁would ▁have ▁been ▁familiar , ▁or ▁even ▁imported ▁from ▁Europe , ▁but ▁Ohio ▁metal work ers ▁were ▁already ▁producing ▁similar ▁work mans hip ▁by ▁this ▁time . ▁ ▁Historic ▁site ▁In ▁ 1 9 7 9 , ▁the ▁Adams – G ray ▁House ▁was ▁listed ▁on ▁the ▁National ▁Register ▁of ▁Historic ▁Places , ▁qual ifying ▁because ▁of ▁its ▁histor ically ▁significant ▁architecture ▁and ▁because ▁of ▁its ▁connection ▁to ▁Edward ▁Adams . ▁ ▁It ▁is ▁one ▁of ▁few ▁National ▁Register - list ed ▁sites ▁located ▁in ▁multiple ▁Ohio ▁count ies ; ▁except ▁for ▁a ▁survey ▁marker , ▁the ▁Seven ▁R anges ▁Term inus , ▁it ▁is ▁the ▁only ▁one ▁that ▁is ▁not ▁a ▁historic ▁district , ▁a ▁bridge , ▁or ▁some ▁other ▁linear ▁site ▁important ▁for ▁its ▁role ▁in ▁transport ation . ▁ ▁One ▁other ▁such ▁site , ▁the ▁Mus king um ▁River ▁Navigation ▁Historic ▁District , ▁includes ▁the ▁entire ty ▁of ▁the ▁Mus king um ▁River , ▁which ▁flows ▁nearby . ▁ ▁References ▁ ▁Category : H ouses ▁completed ▁in ▁ 1 8 4 0 ▁Category : B orders ▁of ▁Ohio