Of the reasons suggested so far to negate that PM is Oswald, the strongest one imo is the unresolved shadow anomaly on Lovelady in Weigman film frame coincident with ( if certified) the person with forearm raised holding bottle ( in the Cronkite version Altgens 6 photo) located exactly at that darken out area of Lovelady.
To explain this new speculative location for Oswald as the reason for the shadow anomaly of Lovelady is going to appear so incredulous that I’m almost afraid to attempt it. 😵💫
Well, Mr Mason, let's start with what is demonstrably non-credible:
A man facing forward into full sunlight having a shadow running down one side of his body
From this we have to ask:
Would the reason for this monkeying with the image have been
a) trivial?
b) serious?
Assuming b), we next have to ask:
What serious reason would the 'investigators' possibly have had to hide something in that area?
Proof of the presence of the accused sixth-floor shooter seems to meet that criterion, no?