A project manager has held a video conference with some of the project team about a technical problem on the project.Various solutions were proposed and discussed,and a few were saved for later analysis.As a result,the issue is better understood and its description has been updated in the issue log.The project schedule has not been changed.During a follow-up meeting to make a final decision,a team member notifies the project manager that another team member expressed concern that he was not included in the meetings.Another team member mentions that he remembers seeing a letter from one of the potential sellers during the bidder conference that may shed some light on how to solve the issue.The team tries to find the letter but no one remembers which seller sent it and they cannot find it in their own e-mail archives.Which of the following would it be BEST for the project manager to do?