This one is definitely worth clicking to embiggen. It’s from the very detailed, very large Histoire générale et particulière du développement des corps organisés by 19th-century embryologist Jacques Marie Cyprien Victor Coste, and there’s a little, tiny baby right in the middle of it. Apparently, Coste spends most of the book comparing developing humans with developing chickens… beautifully, and on a grand scale.
You can see the big, brilliant baby book at Ellis Library Colonnade of the University of Missouri-Columbia.