Scope and content Two letters to Charles David Irwin of Brookline, Massachusetts. Houdini, who was then making an investigation of spiritualism, thanks Irwin for clippings concerning an expose which appeared in the Boston Transcript. In another letter Houdini thanks Irwin for photographs, one of which shows "two ghosts", and aks if he would like a spirit photograph of Abraham Lincoln and Houdini; and one letter from Burton Holmes (November 13, no year) to Irwin thanking him for an invitation and mentioning...