Brookfield officials are considering hiring a firm to do bulk mailings after a referendum reminder postcard arrived at homes after the May 21st referendum date.  The postcards were dropped off at the post office on May 15th.  First Selectman Steve Dunn says he got his postcard in the mail on the Saturday after the budget vote.  Dunn told the Board of Selectmen at their meeting last week that the town received a letter of apology from the Brookfield Postmaster.  While there was 7 days for the post cards to make it to various homes, Dunn says they don't want to mail the reminder out too far in advance.  Postal officials are going to do an investigation into what happened.