Three stories up the sign still exist but the building is no longer a bank. In 1955, the Bank of Toronto and the Dominion Bank merged to became the Toronto Dominion Bank. Then in the year 2000 a purchase of Canada Trust took place. Today the bank is known as TD Canada Trust. Or simply TD.
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The building is located at 101 Brock Street South (at the south east corner of Brock and Dundas Streets). It was built in 1874 and was the Whitby, Ontario branch of the bank from 1875 to 1970. It was the only building in the block to escape destruction in the great fire of October 16, 1877. I'm linking to Lesley's Signs, Signs.