I got collection of over 45oo folder with photo (almost 150k photos there)
I would like to create a contact sheet of these folders - at sheet I would like to see just like it looks when I have a Thumbnail view.

So I need to see up to 4 pics from every catalog I'll choose.

Can I do that without manually copying file from each folder?

When I select all folders the tool (Tools -> Create-> contact Sheet) is unavaible.