Blind contour drawing is a method of drawing whereby the artist focuses on drawing the outline and features of the subject without actually looking at the paper. (artproductionfund.org)
Introduce contour drawing The perception of shape is a complex neurological process that is fundamental to how we make sense out of what we see. (educationworld.com)
I don't know if you remember him; he used to teach contour drawing. (aaa.si.edu)