Fiftieth Connection: Background of blood

In 1997 I purchased a German book of blood and bone diseases from the book sale cart in the University of Cincinnati’s Health Science Library. A small square black and white drawing, titled Fig.572 Myelom, with a detailed polka-dot composition caught my eye and I started using it as an overall pattern in my drawings and works on paper, often with a palette of blues, sepia and raw sienna and often as a background layer as shown in this test image.