This....doesn't seem crazy to me? Somebody might have known it in the 1800s, but any given modern reader may not. You could cite the original source, but it mi

This....doesn't seem crazy to me? Somebody might have known it in the 1800s, but any given modern reader may not. You could cite the original source, but it might be inaccessible (and possibly not very complete). A modern article could be easier for the reader, especially if it's a review. Sometimes you might just want a few examples of a phenomenon too, so the choice doesn't matter much.