Pedzisa mutsara unotevera: Akapedza nguva yake yokuzorora achiveza nokuenzanisira uye tarenda rake romuzvarirwo rakaita kuti atange kushanda somudhirowa muhofisi yomugadziri wezvivako uye ipapo somunyori wemifananidzo yemitambo we"San Francisco Daily News". Munguva iyi akavawo mutambi wetsiva ane unyanzvi, achikunda mumitambo yake mipfumbamwe yokutanga asi achirega pashure pokukundikana kwechigumi. Pashure pacho akashanda panjanji, kutanga somunhu anogadzira mabhureki uye gare gare somunhu anoongorora, somunhu ane unyanzvi wemarble sculptor, uye akanga ari mubatsiri kumukuru wevakagadziri ve
1915 San Francisco World's Fair, uko mamwe emabasa ake akaratidzwa. Munguva iyi akagadzira mifananidzo, kubatanidza dinosaur nomunhu womumapako, ayo akachinja achibetserwa nomugadziri wemifananidzo wenhau dzomunzvimbomo. Mutambi weSan Francisco Herman Wobber akaona iyi mifananidzo yekuyedza yemasekondi makumi mapfumbamwe ndokupa O'Brien basa rekugadzira firimu rake rekutanga, "" (1915) nebhajeti remadhora zviuru zvishanu.