The book was a best-seller, selling almost 100,000 copies by 1937 when it went out of print. The publisher postponed a further reprint as there were plans to update the articles based on changing current events. These plans were derailed by the Second World War. This is the original and  first edition published in 1931.

This is the original and first edition published in 1985, though the reprints are available with a high price.

This is the original edition published in 1950, now out of print in India.