By the 1930s, Colonel Gordon's son, Walter Gordon joined the firm alongside GT's three sons, Robert Curzon, Geoffrey Perry, and Fredrick Curzon. Walter Gordon The firm established a "best friend" partnership with Arthur Young & Co, sharing services and servicing each other's clients depending on which side of the border the client was on. The two firms also created a joint venture in Brazil. The firm operated out of Qeubec and the Maritimes by the firm of Clarkson, Mcdonald, Currie & Co. The firm's name in Ontario and the west soon changed to Clarkson, Gordon, Dilworth, Guilfoyle & Nash.
