A rare surviving investment prospectus for the Ophir Canon Mines Company of Nevada, dated circa 1906. The 6 x 9 in. string-bound booklet is printed in black on tan card covers and features photographic plates, company data, and a large folding lithographed “Sketch Map of Nevada and the Southeastern Portion of California” issued by The Clason Map Company of Denver. The map highlights the company’s holdings in Nye County and is printed in blue with “OPHIR” marked in red. The original mailing envelope is addressed from Ralph R. Landes, a known Nevada mining promoter based in Austin, Nevada. These promotional booklets were issued to attract investors during Nevada’s mining boom and offer valuable regional and industrial insight. Few survive with the envelope and intact map. Dimensions: 6 x 9 in. (booklet); map approx. 14 x 17 in. unfolded. This lot may be picked up free of charge from our facilities in Sacramento, CA. Processing and shipping within the Continental US $30.00. All FedEx packages are sent with Direct Signature Required and insured at full replacement value for a fee of 1.5% of the purchase price, unless buyer accepts complete liability in writing. Discounts given on combined lot shipping. Very good. Booklet complete and clean, light toning; map with minor fold wear; envelope present with tears and pencil notation. Please see photos.