UVic guide to use primary sources
The guide tells you what kind of sources can be primary sources, how and where to find them, and how to evaluate a source for your use.
Reflect about the mystical experience that you wish to focus on
Check the wilkipedia or reference sources to collect the basic information for example, who were the mystics or persons who experienced this and what happened
Search for the personal memoir, diary, or autobiography, which are usually in the book format
Search for the relevant newspaper coverage, historical documents or archival collections related to the event or the person