On The Nederlander Series cover I’ve glued a mouse pad with a copy of Vermeeer’s painting, known as Girl with a Turban, and/or Girl with a Pearl Earring. The second book in that series is about a missing Vermeer, and the series is about international art theft, so it fits.
On The Black Cat Blues Series cover I tried to blend music and black cats. I’m not an artist, but it’s become a comfortable scrapbook kinda place where I grow ideas. That series is about an enigmatic blues singer who lives in a boathouse in Vancouver and encounters more than her share of mysteries.