Transmitting the Spirit, Revealing the Form of Things: Hokusai Sketchbooks, volume 3 (Denshin kaishu: Hokusai manga, sanpen)

The image shows an open book with yellowed pages. The book is open to two pages. The left page has a drawing of a rectangle with a line border. Inside the rectangle are four drawings. The top two drawings are abstract. The bottom two drawings are of people sitting cross-legged. The right page has a single-line border and contains writing in black ink. The book is lying on a gray surface and is covered in a clear protective plastic sleeve.