As a Broker or a Realtor, we can see what office and agent history of sales and listings. Public does not have access to this information in the MLS system.
Sales that close are listed in the newspaper, but only show the sold price, buyer and seller. Not office or agent.
If you are looking for an agent to sell your home, interview. Check out several offices and agents. Ask for refrences. A sales agent can bring you the requested information from the system as to their sales history.
Both theirs and their office.