While the MHS does hold a collection of Woburn Five Cents Savings Bank records, the customer records in that collection only go up to the year 1906. According to the guide linked above, the Woburn bank was acquired by Sterling Bank of Waltham in 1991, which was in turn acquired by Fleet Bank in 1994. Fleet Bank was later taken over by Bank of America in 2004. You can try to get in touch with Bank of America to see if they can provide any information about the account or their historical records. You can find additional information on the Customer Service page of their website.