I’m a fan of Wanda Gag’s classic children’s book Millions of Cats (which, among its many virtues, apparently pioneered the double-page spread in book illustration). The entire book is hand-lettered in a stylish, very uniform hand. I’ve wondered whether the lettering has a source, and confirmed today that it’s Disjoined Library Hand, a style that was once taught in library schools for use in card catalogues. Library Hand fell out of use as typewriters became common. There’s a cursive “Joined” form too. You can look at samples of both here.