Sand sacs

Above: Numbers 
(9) canvases of strips numbered to 500
The 9 canvases can be shown one above the other. 

Below: Portraits (variable) 
(9) 4' X 4-1/2' canvas silkscreens 

Sand Carrying/Sand sacs

500 sacs were carried out of the
San Francisco Women's Building
in 1981.