Acknowledgements This page is to recognise the photographers who so kindly make their work available to people like me. Wilson Vitorino https://www.pexels.com/photo/photo-of-woman-sitting-on-couch-2801784/ Pixabay https://www.pexels.com/photo/adult-beautiful-blue-eyes-book-206563/ mentatdgt https://www.pexels.com/photo/library-photo-1319854/ Toa Heftiba Sina https://www.pexels.com/photo/man-wearing-sunglasses-reading-book-on-body-of-water-1194408/ Bogdan R Anton https://www.pexels.com/photo/person-riding-bicycle-1088607/ Matej Cerkez https://www.pexels.com/photo/woman-walking-on-bridge-1273443/ Ahmad Aqtai https://www.pexels.com/photo/brown-desk-lamp-on-table-2233416/ Gratisography https://www.pexels.com/photo/man-person-woman-face-2015/ Pixabay https://www.pexels.com/photo/black-pen-on-white-book-page-159621/ Ekrulila https://www.pexels.com/photo/white-and-black-map-2127869/ Vera Arsik https://www.pexels.com/photo/woman-and-man-sitting-on-brown-wooden-bench-984949/ Pixabay https://www.pexels.com/photo/d-martin-luthers-book-page-161038/ Jan Krnc https://www.pexels.com/photo/selective-focus-half-face-closeup-photography-of-female-s-green-eyes-840810/ Pixabay https://www.pexels.com/photo/golden-tool-on-white-brown-and-black-map-159216/ Johannes Plenio https://www.pexels.com/photo/blue-body-of-water-with-orange-thunder-1102915/ Artem Beliaikin https://www.pexels.com/photo/woman-wearing-grey-long-sleeved-top-photography-1122868/ Brett Sayles https://www.pexels.com/photo/close-up-photography-of-woman-holding-smartphone-1434624/ Pixabay https://www.pexels.com/photo/black-steel-helmet-near-black-and-gray-handle-sword-161936/ Andrew Neel https://www.pexels.com/photo/assorted-map-pieces-2859169/ Pixabay https://www.pexels.com/photo/pile-of-books-159866/ Frank Cone https://www.pexels.com/photo/fireworks-at-night-2347483/ Eyup Belen https://www.pexels.com/photo/photo-of-man-sitting-on-camping-chair-during-dawn-1428626/ Immortal Shots https://www.pexels.com/photo/person-reading-a-book-2961121/ Miriam Espacio https://www.pexels.com/photo/person-riding-parachute-1877832/ Kaboompics https://www.pexels.com/photo/couple-on-bench-6051/ Cottonbro https://www.pexels.com/photo/black-framed-eyeglasses-on-white-box-4098258/