Hi I'm new to posting, so bare with me. These two pics are from my San Jose early March [?] built 69 Grande. "Keel" I think is the provider to FoMoCo. Off topic: the black grease # 416 refers to repair sheet that I found. This # can also be found on the left front underside of the hood [visible going down the line]. Red inspectors stamp[?]: "P-29" can be found on front of repair sheet, & inside of trunk lid[repair completed]. Hope this helps in gathering more reference info.
Yes it appears that Keel was one of the providers to at least San Jose
As far is "Off topic: the black grease # 416 refers to repair sheet that I found"
Would suggest that #416 is the cars second rotation number, you would have found it many different places on parts that make up your car, so the travelers sheet you found that shows one or more defects included the number as a reference to that particular car. The number came from the upper left hand corner of the cars many buildsheets