| Date | Event | Source | Notes |
|---|---|---|---|
| 1891-07-31 | Formed from amalgamation of Ottawa and Parry Sound Ry Co and Ottawa,Arnprior and Renfrew Ry Co. Deed of amalgamation 1896-07-15. Victoria 54-55, chapter 93. | Bell p158 | |
| 1894 | Line opened Renfrew to Golden Lake, 28.25 miles | CNRHist | |
| 1895 | Line opened Golden Lake to Whitney, 60 miles | CNRHist | |
| 1896 | Line opened Whitney to Cache Lake, 20 miles | CNRHist | |
| 1896-10-05 | OA&PS formed by amalgamation of Ottawa & Parry Sound Railway Co. and Ottawa, Arnprior & Renfrew Ry Co. Effected by deed of amalgamation dated 1891-05-18, and ratified by shareholders. | Bell p158 | |
| 1897 | Line opened Cache Lake to Scotia, 49.25 miles | CNRHist | |
| 1898 | Line opened Rose Point to Depot Harbor | CNRHist | |
| 1898-01-14 | George P. Sills issued writ for death of Arthur Sills. $5000. | Fleming: Renfrew Mercury | |
| 1898-01-21 | Excursion fares for races at Lansdowne: Douglas $1.55, Renfrew $1.30. | Fleming: Renfrew Mercury | |
| 1898-05-13 | Pembroke Observer reports 2 freight trains collided near Edgington. First train was rear-ended by second eastbound after stalling on hill. Fireman Frank Walker (26) of Parry Sound killed; John McQuaig of Ottawa broke leg; engineer Crogham remained in cab, unscathed. | Fleming:Pembroke Observer, 1898-05-13 | |
| 1898-05-27 | 13 cattle, valued at $275, killed near Eganville. | Fleming:Renfrew Mercury | |
| 1898-05-27 | Reported 100 loaded cars eastbound and 50 loaded cars westbound per day. | Fleming:Renfrew Mercury | |
| 1898-06-03 | No train may pass a station until the preceding train has passed the next station. | Fleming:Renfrew Mercury | |
| 1898-06-10 | 3 horses from Barry's Bay killed. | Fleming:Renfrew Mercury | |
| 1898-06-10 | Train went through trestle between Brule and Rainy Lake. Engineer Bearly broke leg. Fireman Albert, Conductor M. Gourlay shaken. Four cars and engine damaged. | Fleming:Renfrew Mercury | |
| 1898-07-01 | Sectionmen of CA & OAPS went on strike demanding $.25 increase on $1 per day | Fleming:Renfrew Mercury, 1898-07-08 | |
| 1898-07-08 | Sectionmen strike over. 10 cent per day increase won. | Fleming:Pembroke Observer, 1898-07-08 | |
| 1898-11-11 | Trestle near Cache Lake shifted, delaying mail train. | Fleming:Renfrew Mercury | |
| 1898-11-18 | McCauley Lake branch nearing completion. | Fleming:Renfrew Mercury | |
| 1898-12-16 | Special train of OAPS was derailed due to broken engine wheel. | Fleming:Pembroke Observer, 1898-12-16 | |
| 1899-01-20 | OAPS received subsidy of $327,232. | Fleming:Renfrew Mercury | |
| 1899-03-24 | OAPS issues writ to restrain St.Anthony Lumber company from damaging the line. | Fleming:Renfrew Mercury | |
| 1899-03-31 | Trestle two miles east of Canoe Lake collapsed. Trestles are being filled night and day. Passenger trains are slowing for all trestles; in some cases, passengers are on foot. | Fleming:Renfrew Mercury | |
| 1899-03-31 | Mail contract for year ended 1898-06-30 gave OA&PS $6999.92. | Fleming:Renfrew Mercury | |
| 1899-04-21 | Derailment at Brule Lake caused by washout. Fireman W.McLean of Lanark killed. Brakeman J.McDonald of Canoe Lake and engineer J.Campbell of Chicago injured. | Fleming:Renfrew Mercury | |
| 1899-04-28 | OAPS to run 14 trains per day through Pembroke (?). Summer traffic to be 48 trains per day. | Fleming:Renfrew Mercury | |
| 1899-04-28 | Spur to Parry Sound under discussion. | Fleming:Renfrew Mercury | |
| 1899-04-28 | Discussion regarding freight boats year round. | Fleming:Renfrew Mercury | |
| 1899-06-09 | Mountain says much land-clearing under way, resulting in fencing. | Fleming:Renfrew Mercury | |
| 1899-06-16 | Bill introduced by Mr.Belcourt to amalgamate CA and OA&PS. | Fleming:Renfrew Mercury | |
| 1899-06-23 | OAPS starting weekly reefer shipments from Renfrew to Montreal. | Fleming:Renfrew Mercury | |
| 1899-08-11 | Amalgamated with Canada Atlantic Railway Company, by deed of amalgamation, dated 1899-06-06.. | Bell p158 |