From the Brandon sun link:
It’s now known as the Bass Building but originally called the Campbell Building after partners Archibald and Robert Campbell operated their combination furniture and undertaking business there for decades after construction in 1905.
“As far as I can find, there’s no relation there,” Wowchuk said of the original namesakes. “They also ended up with partners Fergus Wright and George Ferguson.Ferguson operated as an undertaker, so there were funeral, furniture and undertaking services , and that was actually incredibly common back in the day. Even Brockie Donovan Funeral Home had a furniture store at one point. Undertaking and furniture companies went hand in hand for a long time.”
So the article states that “Ferguson operated as an undertaker, so there were funeral, furniture and undertaking services”… so maybe in the same building??
Here is another link stating that the name was changed when more partners joined
“In 1920, George William Fergusson and Fergus John Wright became partners, after which the firm was known as Campbell Fergusson and Wright. “…. So maybe your reference was before “wright” joined and it was just “Campbell and Ferguson?”
That’s my guess, 29-33 Tenth Street, Brandon would be the buildings for this establishment
http://www.mhs.mb.ca/docs/sites/campbellbuilding.shtml