Conversation so far:
How many aircraft did Glenn Curtiss's factory produce during World War 1?
The JN-4 and N-9 were some of the most famous products of the Glenn Curtiss company, and thousands were sold to the militaries of the US, Canada, and Britain.

Question: How many employees did his company employ in Buffalo during World War 1?
Self-contained rewrite: How many employees did Glenn Curtiss's company employ in Buffalo during World War 1?