Two cables [1978] sent to Department of State from Germany, Stuttgart show "John Barlow" in the subject line.
Rest of the data is redacted; "Not Releasable under either Executive Order or other law or regulation…"
https:// wikileaks.org/ plusd/cables/1978STUTTG01609_d.html
https:// wikileaks.org/ plusd/cables/1978STUTTG01641_d.html