OK...
So here's the Christian Greek Original Volume, shown below, which is the 1950 FIRST EDITION, along with the original green card bookmark (!)
Below are the 1963 Jumbo Bibles, showing the copyright dates
Now compare the two:
Example Original 1950 page below - showing Matthew Chapter One
Example Jumbo 1963 page below - showing Matthew Chapter One
NOTICE - extra footnote, and extra 'cross-references'
I believe the extra cross-references are actually the 'CHAIN-references' that where added:
I understand that the Christian Greek Volume that AvoidJW apparently has is actually the REVISED 1 May 1951 EDITION (which also appears in the so-called Fatboy edition) and this appears to match the 1963 Jumbo Bible.
Does that make sense??