Another example of Sullivan's work in the prairie style is Powers House - at the corner of James St. and Bay St. in Ottawa. To quote from the Heritage plaque mounted on the building:
Originally built circa 1887 for businessman Patrick J. Powers, this house was transformed in 1915 by prominent local architect Francis C. Sullivan. Sullivan created a Canadian version of American architect Frank Lloyd Wright's distinctive prairie style in the period before the first world war. This house is distinguished by its wide eaves, horizontal wood bands, stucco finish and distinctive detailing.
I would have loved to have seen the inside of this house back in 1915. Wright was famous for also dedicating time to designing the inside of his houses too - even the furniture. I am not sure if Sullivan had a similar tendency. Today, however, it looks like this house has been divided up into three or four separate units, so I fear that if Sullivan did do any interior design, it may well be lost now.