Your search for ""topo-031b"" revealed the following:

031B13 Merrickville Canadian topographic map, 1:50,000 scale

031B13 Merrickville Canada topo map, 1:50,000 scale

031B14 Morrisburg Canadian topographic map, 1:50,000 scale

031B14 Morrisburg Canada topo map, 1:50,000 scale

031B05 Mallorytown Canadian topographic map, 1:50,000 scale

031B05 Mallorytown Canada topo map, 1:50,000 scale

031B12 Brockville Canadian topographic map, 1:50,000 scale

031B12 Brockville Canada topo map, 1:50,000 scale