The first one was actually fairly easy, despite the patron thinking it wouldn't be. The history of the chocolate chip cookie. Naturally, I couldn't find any books on it. But we do have the databases, and I was able to find several articles about it, and the original recipe.
Now, Ruth Wakefield, who owns the Toll House Inn, created it.
The second one was a happy answer. She was adopted, and wanted to look at the past birth announcements. That was easy-peasy, and I set her up on the microfilm machine with that specific month and showed her how to use it.