Here's a wonderful sketchbook by Claire Wendling from 2016.
It's a collection of fantasy character sketches, more specifically more of fairies and other female characters. It's almost like a figure drawing sketchbook. There's nudity so the book's probably not suitable for work.
I love the pencil sketches. They are so good. The characters all look so lively and the poses help a lot. The style is stylised but based on a very solid foundation of anatomy understanding. It's a style that's very suitable for animation.
This book was borrowed from Basheer Graphic Books for review purposes. You can order the book from them. Check with Basheer on Facebook. The book's published by Stuart Ng Books so you can probably get a copy there too.