Dover Books publishes a series called Pictorial Archives which has some wonderful images. I suggest that you search using the following keywords: "dover art" or try "dover ornament"
Free Book Graphics
I was looking around the web for little book-related graphics, and eventually came up with a number that, so far as I can determine, are in the public domain. Feel free to use them anywhere you wish. Please let me know immediately if one of these images is copyrighted, and I will either remove it, or obtain permission to include it here.
Dover Books publishes a series called Pictorial Archives which has some wonderful images. I suggest that you search using the following keywords: "dover art" or try "dover ornament"