author
K. A. (Kristian A.) Juthe
Best known for a practical early guide to steelworking, this coauthor wrote for readers who wanted clear, usable advice on annealing, heat treating, and hardening steel. His surviving public record is sparse, which gives his work an old workshop-manual kind of mystery.
1 Audiobook
The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel
by Fred H. (Fred Herbert) Colvin, K. A. (Kristian A.) Juthe
About the author
K. A. (Kristian A.) Juthe is known today mainly as the coauthor, with Fred H. Colvin, of The Working of Steel: Annealing, Heat Treating, and Hardening of Carbon and Alloy Steel. The book has remained visible through library catalogs, Project Gutenberg, and later reprints, suggesting a lasting niche audience among readers interested in metalworking and industrial history.
Very little biographical information about Juthe appears in the readily available public sources I found. Because of that, it is safest to describe him through the work itself: a technical writer or specialist connected with early 20th-century steelworking knowledge, helping explain shop practices in a direct, practical way.
That limited paper trail is part of what makes his author profile interesting. Rather than being remembered for a large body of books or a famous public life, he is remembered for one durable collaboration that continued to circulate long after its original publication.