Re: 1963.5 Galaxie 289 stalling and battery draw
If it only happened once maybe it was that 2 pound key ring turning the ignition off.
If it happens several times - car completely dies - then I would start looking around the distributor and the coil for loose connections and frayed wires.
If it went dead and is still dead, well, that would be another thing.
Welcome to the club.
Putts drives a 1965 customized Galaxie. Rebuilt 390, 4100 electric choke on a Performer, MX, AC, PS, PB w Scarebird front discs on Cragar 17" S/S.