▁re located ▁to ▁the ▁garden ▁of ▁the ▁Pres by ter ian ▁Historical ▁Society . ▁ ▁Six ▁sp and rel ▁figures , ▁cast ▁concrete , ▁Th ro op ▁Poly techn ic ▁Institute ▁( now ▁California ▁Institute ▁of ▁Technology ), ▁Pas ad ena , ▁California , ▁ 1 9 0 6 – 1 9 0 9 , ▁My ron ▁Hart ▁& ▁El mer ▁Grey , ▁architect s . ▁Nature ▁and ▁Art , ▁Energy ▁and ▁Law , ▁Science ▁and ▁Im ag ination ▁Oak land ▁C iv ic ▁Aud itor ium , ▁Oak land , ▁California , ▁ 1 9 1 4 , ▁John ▁J . ▁Don ovan , ▁architect . ▁The ▁Rich es ▁of ▁the ▁Earth ▁– ▁Seven ▁terra ▁c otta , ▁half - dom ed ▁fr ie zes ▁within ▁the ▁arch ed ▁ent ran ces . ▁Missouri ▁State ▁Capit ol , ▁Jefferson ▁City , ▁Missouri , ▁ 1 9 2 4 , ▁T racy ▁and ▁Sw art w out , ▁architect s . ▁South ▁F rie ze , ▁lim estone , ▁ ▁x ▁, ▁dep ict s ▁Missouri ▁history ▁in ▁ 1 3 ▁bas ▁relief ▁pan els . ▁The ▁fr ie ze ▁fl anks ▁the ▁to ps ▁of ▁the ▁central ▁port ico ' s ▁columns ▁and ▁continues ▁behind ▁them . ▁North ▁F rie ze , ▁lim estone , ▁bas ▁relief ▁pan els ▁dep ict ▁Native ▁Americans ▁and ▁Europe ans . ▁The ▁fr ie ze ▁fl anks ▁the ▁to ps ▁of ▁the ▁central ▁columns ▁and ▁continues ▁inside ▁the ▁cur ved ▁port ico . ▁ ▁Four ▁figures