This is Dinosaur: Echo Park Country and Its Magic Rivers

Knopf title - "First Edition" stated is 1st printing, light soiling to edges of text block with 2 small drip stains to bottom edge - light rubbing/soiling along top/bottom edges of boards - top/bottom corners of boards have been worn through with from 3/16" to 3/8" loss of paper covering - 21/4" wide x 11/8" tall light remnant of a sticker removal to upper right with 3 small drip spots to lower right of front board - 3 small drip spots to rear board - interior is clean and binding is very good - missing the dust jacket, chapter contributions from 7 Authors, black & white and color photographs reproduced full or half page from 6 photographers, map of Dinosaur National Monument and the surrounding area to front and rear end papers.