's studio in 1862. in 1865. Arriving in
Montreal in 1853, Robertson continued in the dry goods business working for the firm of Brown & Swan until 1855. Afterwards, he established Andrew Robertson & Company, specializing in yard goods. In the early 1860s, he built the Auburn Woolen Mill at
Peterborough, Canada West, where he manufactured Canadian
tweed. In 1869, Andrew Robertson took part in a major meeting of the Montreal Board of Trade concerning the proposed construction of the Royal Albert Bridge across the St. Lawrence River. The meeting, attended by more than a hundred merchants and business leaders, debated whether the bridge would benefit railway development and commerce or obstruct navigation in the port of Montreal. Robertson sided with
Hugh McLennan and other prominent figures in supporting an amendment that opposed the bridge as planned, on the grounds that it would seriously hinder shipping. The resolution to withhold approval of the bridge was ultimately adopted unanimously. In 1867, Robertson sold the Auburn Woolen Mill in order to buy the future
Lord Mount Stephen's wholesale dry goods business in Montreal. Stephen's youngest brother, Francis, joined Robertson in the firm of Robertson, Stephen & Company, and in 1874 Robert Linton also became a partner. Robertson retired from business in 1885, and at his death left an estate of between $350,000 and $400,000. The year after his death, Linton acquired the interest held in the firm by Robertson's heirs. ==Public life in Montreal==