List Revisions on Sheets in Current Document and Linked Models

I’m working through a script for getting all the revisions and the sheets they appear on to populate an excel spreadsheet. I have a version working thanks to some help from Kulkul and Andrew King (see below). The next step that I’m trying to work on is getting the revision data from linked files using Spring Nodes to be part of the data written to the excel file. The core of getting the revision and sheet data relies on a python node from Andrew, and I was wondering if anyone had any ideas on adapting it to gather linked file information along with the current file. I posted my question to the thread from Revit Forum (below) in reference to the code and since I don’t know python well enough I was hoping someone might have some insight here as well. Thanks!