- Images of Hill Arches, Vienna, Austria, 1978, by Henry Moore. Digital Imaging Project: Art historical images of European and North American architecture and sculpture from classical Greek to Post-modern. Scanned from slides taken on site by Mary Ann Sullivan, Bluffton College.www.bluffton.edu/~sullivanm/vmoore/vmoore.html
- www.artchive.com/artchive/ftptoc/moore_ext.html