While there are many individuals with the name "John Galvin", there's no easily accessible information about an author with the specific name "John T Galvin" who has published works.
To help me find the author you are interested in, please provide more details, such as:
* Full name: If you know John T Galvin's full name, please share it.
* Genre or topic of writing: What kind of books does he write (fiction, non-fiction, history, etc.)?
* Book titles: Do you know the titles of any books he has written?
* Time period of publication: When were the books published (e.g., 20th century, recent)?
With more information, I can be more helpful in finding information about John T Galvin's published works.