Before we do anything else, please watch this video from Grammar Rock about prepositions.
I know. It’s definitely not one of Schoolhouse Rock’s stronger moments, this one; it lacks the catchy elegance of “Conjunction Junction” or “Lolly Lolly Lolly get your adverbs here,” but I wanted to give you a quick refresher on what prepositions are, even though this isn’t really about prepositions, what I am about to say.
We’re just looking at the titles here, not the articles themselves. Do you notice something about the prepositions? In standard English style, prepositions (except at the beginning) in titles are usually not capitalized, especially when they are short words. You’ll notice, too, that the, a, and an, except when they appear at the beginning of a title, are also not capitalized.
Wikipedia is not the arbiter of style (I am working on a DailyWritingTip about terminal S and apostrophes, and I am coming after Wikipedia loaded for BEAR!), but in general the community does manage to get most things right. In this way, we have articles about The Cat in the Hat, “Do You Know the Way to San Jose,” and “Over the River and through the Woods.” Many people feel the need to capitalize EVERY word in a title, but that’s not you or me, because we know better, right?
You will please thank me for resisting my usual temptation to get punny by asking if I may preposition you.