Sadly, I strongly suspect the FBI's suspect list might look a lot like the one from the general public. I heard from several FBI agents - especially Dorwin Schreuder and Larry Carr - that their basic Modus Operandi was to wait for the public to bring them suspects and then investigate them relative to the evidence that was on file. Ayn Dietrich-Williams was also clear that the FBI looked at LD Cooper for YEARS, solely based on Marla's initial findings. I bet no one still knows LD's correct birthday, his actual weight and height in 1971, etc. No one I know was looking for that kind of information. Ever. Marla certainly wasn't, nor the cops working with her in Okie. Perhaps Eng called the Oregon DMV, but it's out of character and hard for me to imagine. Maybe Georger can.