 The building's water needs were assisted by a 40,000 gallon rooftop water tower.In 1953, Simpsons Limited (the holding company for The Robert Simpson Company Limited [or Simpson's]) joined forces with Sears, Roebuck and Co. of Chicago in forming a 50/50 ownership in a new company, Simpsons-Sears Limited.The new firm took control of Simpson's catalogue and mail-order business and would open new Sears-style department stores in markets not already served by Simpsons.