author
A little mystery surrounds this credited author, but the surviving record points to a South Dakota publishing or engineering outfit behind an early 20th-century travel guide. The work offers a vivid glimpse of Black Hills tourism in the age of the automobile.

by S.D. Mitchell Dakota Engineering Company
The name attached to this title appears in library and ebook catalogs as “S.D. Mitchell Dakota Engineering Company” or “Dakota Engineering Company, Mitchell, S.D.” Rather than clearly identifying a single individual author, the available records suggest a company or local publisher based in Mitchell, South Dakota.
The best-documented work under this credit is Souvenir Map and Guide for Tourists in the Black Hills of South Dakota. Archive records list it as published in 1913 by The Mitchell Publishing Co., and describe it as a guide connected with automobile travel, which fits the book’s practical, route-focused style.
Because reliable biographical information about a person named S.D. Mitchell could not be confirmed from the sources found here, it is safest to treat this author credit as a historical imprint or corporate attribution. What remains clear is the appeal of the work itself: a period guidebook that captures how travelers once explored the Black Hills by road.