A friend of mine told me that Barbara Gordon once teamed up with the Justice Society during her Batgirl days and even briefly became a member.

Does anyone know which title and issues that happened in?

There are some obscure Babs Batgirl stuff which I am trying to learn more about. (For example: last year, much to my delight, I found out on this very site that Babs went on a blind date with Clark Kent in Superman #268 and #279).