I know of no such "verification". My recollection is that every statement from Dr. Onaka is dubious and unclear as to the exact meaning. They contain verbal loopholes through which you could drive a bus.
My recollection is that there is nothing concise or explicit from Dr. Onaka that can be regarded as authoritative.
How do you image the baby got to Honolulu on those dates?
I know of no clear evidence that the baby was in Honolulu on those dates. I do know of evidence that the baby was in Seattle during the later part of August 1961.