Since there are still many copies of the first (English print) edition of A Course In Miracles, I found this cross-reference chart that a fellow Course student gave me at least a decade ago. Just in case you (or someone you know) still has a print copy of the first English (combined volume) edition of the Course, here’s a handy chart, often useful in online (e.g. zoom) study groups:
Right-click (windows) or control-click (Macintosh) on the image to download it for printing.