In 1888 Booth chartered the Ottawa, Arnprior and Renfrew Railway to build a line from Ottawa to Renfrew, as well as the Ottawa and Parry Sound Railway which ran from Parry Sound to Renfrew. The two lines were amalgamated into the Ottawa, Arnprior and Parry Sound in 1891. Together with the Ottawa to Vermont lines, the OA&PS would open up vast areas around the Great Lakes for rapid shipment to the US eastern seaboard, as well as providing a route for his own timber to reach Ottawa from areas not well served via the Ottawa River.