According to Wikipedia:
"Marian Anderson made history...as the first African-American to sing on the Met stage. Robert McFerrin followed with his Met debut in the same month, January 1955. Thus, Robert McFerrin became the first black man to sing at the Metropolitan Opera.
"Rarely stated in the great publicity surrounding Marian Anderson's accomplishment is the fact that McFerrin was already engaged to make his debut when Anderson received her contract."
Robert Anderson died in Nice, France, October 26, 1871.
The commanding officer of Fort Sumter was Major Robert Anderson.
Major Robert Anderson was allowed to take the US flag which had flown over Fort Sumter with him when he left the fort.
Major Robert Anderson
Fort Sumter was commanded by Major Robert Anderson.
Marian Anderson when she sang the part of Ulrica in Verdi's Un ballo in maschera during 1955. She was also the first African-American to be named a permanent member of Metropolitan Opera Company.
Robert McFerrin was born on March 19, 1921, in Marianna, Arkansas, USA.
Robert McFerrin died on November 24, 2006, in St. Louis, Missouri, USA of heart attack.
Robert P. Anderson died in 1978.
Robert Woodruff Anderson died in 2009.
Robert Anderson - poet - was born in 1770.
Robert Anderson - poet - died in 1833.
Robert Charles Anderson was born in 1944.
Robert Anderson Irion died in 1861.
Robert Anderson Irion was born in 1804.
Robert Theodore Anderson was born in 1934.
Robert Theodore Anderson died in 2009.