1. Go to History by account. From Bookkeeping > Reconcile, click History by account in the upper right. This is the full archive of every reconciliation you've run for every connected account, not just the current one in progress.
2. Select the account you need. Choose it from the dropdown at the top. QuickBooks lists reconciliations only for whichever account is currently selected, so switch accounts here if you reconciled the wrong one first.
3. Find the specific period and click View report. Reconciliations are listed by their ending date, newest first. Click View report on the row for the period you want, whether that's last month or three years ago.
4. Print or save it from the report screen. Click the print icon at the top of the report, or use Ctrl+P (or Cmd+P on a Mac). From the print dialog, either send it to a physical printer or choose Save as PDF to keep a digital copy instead.
5. If you'd rather search by report name, use Reports instead. Click Reports in the left navigation, type "reconciliation" into the search field, and open Reconciliation Reports. Pick the account and, if there's more than one reconciliation for it, the specific ending date from the dropdown, then Run Report before printing.
6. For a batch of several periods, repeat per period rather than expecting one combined export. QuickBooks generates one reconciliation report per completed reconciliation; there's no single button that prints every period at once, so pulling a full year means opening and printing each month's report in turn.