A lion and lioness defending their cubs at the mouth of their den. Etching by A Duncan after W-S Howitt. https://www.rawpixel.com/image/13982402/image-cartoon-art-animalFree Image from public domain licenseA woman studying a book of tragedy while having her hair dressed by a female assistant; in the background a group act out a… https://www.rawpixel.com/image/14005334/image-background-person-bookFree Image from public domain licenseSaint Mary (the Blessed Virgin) with the Christ Child, Saint Sixtus, Saint Barbara and angels. Engraving by A. Duncan after… https://www.rawpixel.com/image/13999116/image-angels-face-jesus-christFree Image from public domain licenseAndrew Duncan. Line engraving by T. Trotter, 1784, after W. Weir. https://www.rawpixel.com/image/13999751/andrew-duncan-line-engraving-trotter-1784-after-weirFree Image from public domain licenseT. Duncan, Professor, Mathematics, St. Andrews by Thomas Rodger https://www.rawpixel.com/image/14315033/duncan-professor-mathematics-st-andrews-thomas-rodgerFree Image from public domain licenseAndrew Duncan. Engraving by E. Mitchell, 1819, after H. Raeburn. https://www.rawpixel.com/image/13977524/andrew-duncan-engraving-mitchell-1819-after-raeburnFree Image from public domain licenseA man is fishing with a line from the banks of a river, as another man sits on the bank with a net in his hand. Engraving by… https://www.rawpixel.com/image/14020130/image-cartoon-hand-frameFree Image from public domain license