I introduced myself in The Bonsai Cafe and posted some pics of what I thought were Liquid Amber seedlings.
Boics suggested that they might be Trident Maples, so I thought I would post some "better" pics here and hope you can ID them.
Tree 1 - I believe this is a Liquid Amber because the leaves are large and some have five points:

Tree 1 - Leaf close up:

Tree 2 - This is the suspect Trident:

Tree 2 - Leaf close up:

Would be interested to hear your thoughts.
Cheers.