Members of the Cavanagh family have resided in Yale, St. Clair County, Michigan since 1857. The collection was accumulated by Martha Cavanagh Cameron and consists of original and copied materials of various Cavanagh and Johnston family members.
The Cavanagh family papers have been arranged into an alphabetical series. The files have been arranged by name of family member with a few exceptions for general family and Yale related files. Of special note are the diaries of George Cavanagh, who was proprietor of the Princess movie theater in Yale, Michigan beginning in 1915.