My guess is that the tales featured in the three-week “Legends of Christmas” comic strip were stories Kreigh Collins had come across during his extensive historical research. The first week’s comic were unusual, and did not really hang together, but they certainly presented a view of Christmas that is completely absent today.
The longer story of Peter that ran over the strip’s final two weeks has better continuity, but is still quite unusual. While it may be a story Collins came across in his research, I wonder how much of it was his own. Like Peter, Kreigh was an only child; both were extremely devoted to their mother. Kreigh’s father worked as a construction engineer, and while he often moved his family with him as his work took to various parts of the United States, at other times he was away from home an extended period (like Peter’s father).
I have never seen printed examples of this comic. While the quality of these comics is not so great, at least they all have been preserved digitally. Season’s greetings — only 113 shopping days ’til Christmas!