I am trying to link three levels of workbooks without having to open
all of the intermediate workbooks.

Example: If I enter a number in first level I would like the next set
of workbooks (141) to calculate automatically. The third level would
then reflect the results of the calculations without having to update
all of the workbooks (141). Is there a simple way of doing this or do
I have to activate 141 workbooks?

Thanks,
Steve