I doubt it, but who said he signed the CSS form at the hospital?
I also doubt it....Drain probably signed his name on the document when he received it from the DPD at MID-NIGHT 11 / 22 /63.....Thanks to Gary Craig's posting of Captain George M Doughty's affidavit we have proof that the evidence, which included the 3 X 5 card ( CE 637) was turned over to the FBI at midnight.