Misc: A flat round Dutch cheese?

Questions

In 1949, what drug was first used to treat arthritis?

If you are sinisitromanual, you are?

What is the name of the oldest derby race in North America?

Which pleated instrument did Friedrich Buschman invent in 1822?

Even though she was a ‘Canadian’ who became known as ‘America’s Sweetheart’ in the film industry?