I am trying to digitize a large archive's index volumes. I found diskettes with are documents saved in Pagemaker4.x Mac that I need to convert to something modern and usable. they are text only. I am on a PC using mac drive to see and load the 3.5" diskettes that the files are on.
You will need an older mac with Pagemaker 6.5 or 7 and possibly Pagemaker 5 (I just can't remember if PM 6.5 or 7 can open pm 4 files) and a newer computer with a copy of Indesign cs6 or lower to convert the files to something modern and usable. Results will vary depending on how the documents are formatted.
Jay
This very old (2008) thread may help: Converting PM4 files to non-PageMaker files