Clip art is the quickest, easiest way to add professional illustrations to your blog or other site, and it’s also inexpensive — in fact, if you sign up for the Dover Publications sampler, it’s free.
Dover specializes in royalty-free clip art, reprints of out-of-copyright books, how-to manuals, and children’s activity books. (Their stained glass coloring books are always a hit with kids). Every week, newsletter subscribers are notified of specials and new releases, and they can also download copies of several images from each featured item, to reuse without restrictions. There’s a wide range — our illustration comes from a book called Knights vs. Samurai.