Photo-etching in grey, on eight sheets of Rives BFK paper, the full sheets,

1979-81

each S. 75 x 106.8 cm (29 1/2 x 42 in.)
overall 600 x 106.8 cm (236 1/4 x 42 in.)

one sheet signed with initials, titled, dated '79' and numbered 13/15 in pencil, published by Crown Point Press, San Francisco, CA (with their blindstamp), all unframed.