The Art of Caricaturing.

I found this 1941 book about how to draw cartoonish style and caricatures of different subjects. It is a popular download at the Internet Archive. Perhaps you could find it useful. And it is fun, indeed.

Click on the image to read the whole book.

It is not really a do it yourself book as today cartooning books, but it is their granddaddy. And it is great to see how common subjects are a tradition in here. Enjoy.