EM-062 Grizzly Valley Oil Rig Study Posted on November 13, 2019November 13, 2019 by Lane Euphemia McNaught Grizzly Valley Oil Rig Study Catalog No.EM-062 Date: nd Category Drawing Medium Colour Pencil & Pen Dimensions: 23.25h x 27.5w in. Credit Line: Private Collection Markings: Notes: