My Canadian Contact Dave harper, has just sent  over this shot of  a walker cannon
with the distinctive W co on the trunnion.excellent stuff.
This cannon is in the fort of La citadelle in quebec.
Quebec was captured  by the british after using the lawrence river to launch its attack.
Navigating the River was made possible by the well known captain cook,that was and still is treacherous to navigate.

Just got a new picture from dave harper of the Walker cannons at quebec,at La citadelle.
Showing 3 walker cannons may be 24 pounders.