Sir John Young Walker MacAlister (1856-1925), Librarian and Secretary, Royal Society of Medicine, London. Oil painting after… https://www.rawpixel.com/image/13963929/image-face-frame-personFree Image from public domain licensePen-y-Gwryd, Wales: a mountaineering party seated outside Penygwryd Hotel, eight men, six women. Photograph by G.D. and A.… https://www.rawpixel.com/image/13985868/photo-image-person-clothing-manFree Image from public domain licenseSir John Young Walker MacAlister. Photograph by Paul Laib. https://www.rawpixel.com/image/13987930/sir-john-young-walker-macalister-photograph-paul-laibFree Image from public domain license