Rare, royalty-free initials, musical motifs, animals, borders, frames, more. Art Nouveau, Art Deco, other styles.
Here's a sample of other books in this Dover category
Horses and Horse-Drawn Vehicles: A Pictorial Archive by Carol Belanger Grafton Over 800 royalty-free illustrations selected from more than 25 vintage and contemporary publications: horses, riding, hunting, equestrian events, racing, polo, military, Western, stables and blacksmiths, equipment and accessories, carriages, mythical subjects, and hobbyhorses.
Design Motifs of Ancient Mexico by Jorge Enciso This catalog of ancient motifs contains over 760 vigorous, powerful, stark designs from pre-Columbian clay stamps made by Aztecs, Maya, Zapotecs, Toltec, Olmec, Mixtec. Depictions of serpents, gods, priests, dancers, florals, geometrics, more.
Florid Victorian Ornament by Karl Klimsch Over 700 borders, frames, corners, scrollworks, cartouches, florals, vases, geometrics, figures, rosettes, all in high Victorian style.
Astrology and Astronomy: A Pictorial Archive of Signs and Symbols by Ernst and Johanna Lehner More than 300 rare engravings and woodcut illustrations of astrological and astronomical subjects from around the world. Striking depictions of planets, the Milky Way, signs of the zodiac, comets, meteors, more.
79 Decorative Alphabets for Designers and Craftspeople by Carol Belanger Grafton Over 2,000 royalty-free letters in this volume represent a highly useful and versatile resource, including 79 complete alphabets in a splendid array of styles — flowering capitals, wandering tendrils, many more.