John,
That piccie is on page 235 of Graves' SOUTH ALBERTAS. A great pic! Interestingly, it was just around the corner from that where I had the rear wheel of my bicycle respoked in the fall of 1975....
Ref the Priest, a number were kept in service with the armoured corps regiments as command & control vehicles (as opposed to OP tanks). There are other pics out there as well which document this.