श्रीनिवास रामानुजन की गणितीय प्रतिभा के संबंध में किसने प्रसिद्ध रूप से कहा था: 'उन्होंने मुझे पूरी तरह से हरा दिया' ('He defeated me completely')?

In which year did Clara Barton retire as head of the American Red Cross?

Which major humanitarian organization in the United States was founded by Clara Barton?

What was Clara Barton's first career before her famous nursing service?