These illustrations are from the illustrations to Osius's Aesop which you can find online at the Aesopica.net website. Click here for more illustration slideshows.
Here is the Osius slideshow (apologies to iPad users - the Flickr.com slideshows are Flash-based, but you can view the Flickr album directly if the slideshow does not work). Note that a considerable number of these images were paired with fables that they patently do not fit, so sometimes there is a discrepancy between the title on an image and what the image itself actually shows!