In order to see a list of items that were previously checked out, you must have previously opted in to the My Reading History option in your My Catalog account. If this wasn't previously done, there is no way to reconstruct what you had checked out (unless there were overdue fines associated with an item).

To opt in to the My Reading History, first log into My Catalog.

On the right side of the screen you will see a list of blue buttons, one of which is My Reading History. Click on that.

On the left side of the screen you will see an Opt In blue button. Click on that. Note that you may thereafter choose to Opt Out of the My Reading History feature at any time by clicking on the Opt Out blue button.

Once you have opted in to the My Reading History feature, you may thereafter log into your My Catalog account and choose My Reading History to see a list of items you previously checked out.