Caption: FP9A CP 1406 and train are making a scheduled station stop at Trois-Rivieres QC before continuing to Quebec City. CP 1406 is equipped with icicle breakers that protect the dome cars of "The Canadian" in tunnels. All the passenger trains I ever saw in T-R were hauled by one EMD or GMDD locomotive.
Most frequently seen on passenger trains here in 1970-71 were CP's remaining E8A units, 1800 or 1802. (I wondered about CP 1801, but it had been scrapped after a crash in late December 1968.)
Second most common were CP 406x series FP7A units in maroon and grey. CP Rail red passenger engines were least often encountered on my intermittent visits to the station.
By around mid-year in 1971 all the passenger trains I saw in T-R were sets of Budd RDC's.