UPDATE - September 2007
In late 2003 I was given permission by staff members to conduct an investigation of Spadina House after hours in the evening. The staff kindly gave me unfettered access to the main, and second floors. Recording devices were set up in areas where apparitions were reported, as well as numerous photos taken. I spent the better part of an hour alone within the museum, which I can tell you to date is one of the highlights of my being a ghost researcher despite not being able to uncover any evidence of ghost, and haunting phenomena.
The recording devices did not pick up anything unusual nor did the photographs, but I did have the most peaceful, and tranquil feeling come over me while I was there. It is as if this house is still alive with it's memories of past times. This could very well be because most everything at Spadina (unlike most other museums) is unique to the Austin family, and has belonged there throughout this home's years.
As Matthew has stated above the museum was a happy family home in it's hey dey, and the reports that staff have provided us with over the years (some private, and unpublished) are quite benign in nature.
Your privacy, anonymity and security will, of course, be maintained.
Reference on History:
Thanks to the tour guides, volunteers and Interpreters on the site as well as the kind and knowledgeable staff of Ontario Heritage and The City of Toronto Dept. of Culture: Museums and Historic Sites.
Book: Spadina: A story of old Toronto by Austin Seton Thompson
Paguran Press, 1975