Portrait of a Nihang or an Akali by Willoughby Wallace Hooper https://www.rawpixel.com/image/14263037/portrait-nihang-akali-willoughby-wallace-hooperFree Image from public domain licensePage 116: three portraits of kings, princes or generals. Gouache drawing. https://www.rawpixel.com/image/13963326/page-116-three-portraits-kings-princes-generals-gouache-drawingFree Image from public domain license