“As I mention in the document, one reason for putting this out is to see if I can shake some old documentation out of the tree. Some old airline employee or investigator may have something. The National Archives has nothing. Maybe some bystander with a Brownie camera has pictures. Some of this material probably still exists, but I see no path to it except this document and word of mouth......”. BRDubois.
Wasn’t the CAB folded into the FAA? If so, it was, is a Federal agency....
Records of this type of accident are not allowed to be destroyed, IMO.
The FAA will almost certainly have all the data. To get the data requires a filing of FOIA request. “Freedom of Information Requests” are not difficult to file. If the FAA demures, a lawsuit will encourage the release.
I state this in the interest of explaining that our government works for the people. One needn’t demonstrate a need for the data, it must be made available to those who request it.