Verna Lee personally told Zullo how the birth documents were numbered. I would take her word.
Can you provide a link to such a statement by Zullo saying he personally talked to Lee. IIRC, Corsi talked to Lee by phone and recorded the conversation. he then played the recording for Zullo.
The recording or a transcript of it have never been made public. For all we know they may have misinterpreted what she said. Just like the federal codes and the statement about the Bennett article and the left justified margin of Hawaiian BCs.