Sorry if this has already been asked...
Can those earlier FFG Print On Demand expansions be used with MoM 2nd edition (such as The Silver Tablet)?
I have never seen one of the mini expansions, so I have no idea how they would affect the game.
Not so far. The only things the previous edition adds to the game is tiles, monsters, and investigators (no cards) so it's unlikely the PoD expansions will ever have any effect on 2nd edition.