What has the author Al McGuire written?

It seems you're thinking of Al McGuire, the famous basketball coach, not an author. He's known for his time coaching Marquette University's basketball team and his colorful personality.

He did have a book published in 1987, titled "Al McGuire's Guide to Winning Basketball." This book is likely the closest thing to writing you're thinking of.

Perhaps you're thinking of a different Al McGuire? If you can provide more context about the kind of writing you're looking for, I can help you narrow it down.