author
S.D. Mitchell Dakota Engineering Company
Best known for a compact early 20th-century guide to the Black Hills, this credit appears tied to a South Dakota map-and-publishing imprint rather than a well-documented individual author. Very little biographical information survives, which gives the work an appealingly local, time-capsule feel.
1 Audiobook
Souvenir Map and Guide for Tourists in the Black Hills of South Dakota Maps prepared especially for the use of Automobile Tourists
by S.D. Mitchell Dakota Engineering Company
About the author
Project Gutenberg lists Dakota Engineering Company, Mitchell, S.D. as the author credit for Souvenir Map and Guide for Tourists in the Black Hills of South Dakota. From the way the credit is presented, it appears to refer to a Mitchell, South Dakota company or publishing imprint, not to a clearly documented personal author.
No reliable biographical profile for an individual named S.D. Mitchell was clearly confirmed in the sources I found. Because of that, it is safest to treat this author entry as a corporate or imprint-style attribution connected with regional South Dakota publishing.
That makes the surviving work interesting in its own right: it seems to come from the world of practical travel literature, when local companies produced maps and guidebooks for visitors. Even with so little known about the creators, the guide offers a small window into how the Black Hills were introduced to tourists in the early 1900s.