Title Page from Diversae Insectorum...Figurae by Wenceslaus Hollar https://www.rawpixel.com/image/8970156/title-page-from-diversae-insectorumfigurae-wenceslaus-hollarFree Image from public domain licenseNeck Muscles, plate three from Complete musculature in Natural Size and Color by Jacques Fabien Gautier d'Agoty https://www.rawpixel.com/image/8980534/image-paper-frame-personFree Image from public domain licenseDegree of Ossification of a Five-Month-Old Fetus (Degré d'ossification d'un Foetus de cinq mois) by Unknown https://www.rawpixel.com/image/8964041/photo-image-person-art-watercolorFree Image from public domain license