Pane Removal From Canadian Booklets

Any suggestions for removing panes from Canadian booklets, easily, safely and retaining the undamaged selvage?

Steam?

It all depends on the type of gum and how the panes were glued into the covers. In any case, there will be minor traces of removal visible after a pane is removed from the cover, depending on how extensive the area of glueing is. Some panes may have been attached with a few tiny water spots, some might have been attached by a thin water spray line, some may have fully wetted tabs.

After the fact, the top pane from a booklet shows missing gum where the pane was glued, an intermediate pane might show some "removal" traces on the front of the tab (from the pane above) and the same traces as the top pane on the back of the tab.

Panes with shiny gum may be loosened by applying heat with an iron, panes with dull gum usually require applying water to the tab in some way (hence removing most of the gum). Panes with only a few tiny gum dots might be removed by a brutal fast pull (I've seen that done by a dealer and the pane's tab survived).

In any case, it takes a lot of practise and your first tries will end in postage, likely. Always protect the stuff you don't want to get ruined with clean white paper pieces.
In single pane booklets I simply cut away the cover cardboard and leave the thin strip of cardboard left on the pane's tab.