Conversation so far:
Who was Rosalie?
Price claimed to have attended a private seance on 15 December 1937 in which a small six-year-old girl called Rosalie appeared.
What did she say or do?
During the seance Price claimed a small girl emerged, she spoke and he took her pulse.
What happened after that?
Price was suspicious that the supposed spirit of the child was no different than a human being.
Did it do anything to him?
Price "shaken to the core by his experience..

Question: Did he write about this event?
Self-contained rewrite: Did Harry Price write about his experience with Rosalie?