Blockchain – List of Bitcoin exchanges available in 2009

Hope you can help. I am helping a friend find a Bitcoin wallet. The wallet is believed to have been created in 2009, and the coins were transferred to a Bitcoin exchange.

My question is, what exchanges were possible at that time?

A friend of mine claimed that he had researched hacked Bitcoin exchanges and that he did not believe his coins were lost on any of them. Although Mt Gox looked familiar to her, she said it was not the exchange where her bitcoins were sent.

Thanks in advance for your reply.