what was the class year of the man born on october 29 , 1845 who found notability at the 11th-longest river in the united states at 1,280 miles ( 2,060 km ) from its headwater source at the head of blackwater draw , curry county , new mexico to its mouth at the gulf of mexico with a 45,000-square-mile ( 116,000 km2 ) drainage basin ?
1870