Erik Adolf von Willebrand's portrait: https://www.geni.com/people/Erik-Adolf-von-Willebrand/6000000002887960802, 17 Aug 2017
Experimental images for VWF conformation: Fowler, Walter E., et al. "Substructure of human von Willebrand factor." Journal of Clinical Investigation 76.4 (1985): 1491.
Experimental movies for reversible aggregation: Chen, Hsieh, et al. "Blood-clotting-inspired reversible polymer-colloid composite assembly in flow." Nature communications 4 (2013): 1333.