http://images.library.pitt.edu/cgi-bin/i/image/image-idx?sid=34b7dbaf167b711f78d4d5bb8f711872;xc=1;g=imls;c=accd;q1=steel;rgn1=ic_all;evl=full-image;quality=3;view=entry;subview=detail;lasttype=boolean;cc=accd;entryid=x-msp285.b013.f29.i07;viewid=ACCD2578.TIF;start=1;resnum=102 same loop, different angle