Going forward, banks may well continue to shave branch numbers in order to control costs and reduce branch density. (emiboston.com)
You can then write yourself a check on the US bank and mail it to the Canadian bank; be sure to write «For Deposit Only» along with your account number (and Branch Number for Canada) on the back. (money.stackexchange.com)
For example, instead of just «banking records» try: customer account agreement at branch number 123 in October 2013, account statements, account opening documents, signature cards, cheque images, etc.. (canadianlawyermag.com)