Denver: Brock-Haffner Press for The City and County of Denver, 1916. Unpaginated, p., printed double-column to allow space-saving vertical folding; coated paperstock throughout with matte-turquoise-blue borders and background; staplebound. Folded as an upright, item is 8.5x3.5 inches, folded-out it accommodates a central doublespread map of city and mountainous environs measuring 8.5x14 inches (very nice, with overprinted labels in red and black. Mild wear. Both vertical folds show abrasion, cover image bears a tiny distribution stamp-impression in faint purple and a lightly-pencilled two-letter seller's code. Sound clean exemplar.