Regular readers will remember from our "Using Google books" article that I found an incomplete reference to the marriage of Clark Sargent and Mary Dingman in Ontario.
Google books only gave me enough information to determine the marriage is included in a series of twentysome books.
The Family History Library in Salt Lake has the set of actual books. I'm putting them on my "to-do" list and hopefully will have an update for readers later.
Google Books doesn't always give the complete information, particularly for books that are still in copyright. But as was pointed out in the article, some information can be harvested from Google Books if you are creative.
In my case, enough was found to know that it's the "right" couple and that I really need to see the actual book.