You can view some of the illustrations from Youngho and Chadori:The Door to the Spirit World in full size here.
More illustrations will be added later. I am unable to include more right now due to an exclusivity agreement.
To zoom in on a detail, click on the image, move the magnifier to the element to enlarge, and then click again; or double tap and pinch to zoom. One of these methods will work on most devices. If it doesn’t, please consult the manufacturer’s instructions on how to resize images.