author
Presented as a Chicago-based engineering publisher rather than a single named writer, this name appears on practical technical works aimed at instruction and reference. The surviving record suggests a house style centered on clear, utilitarian information for students, mechanics, and working engineers.
by Chicago American Bureau of Engineering
Available sources identify Chicago American Bureau of Engineering as a publishing or corporate authorship name attached to engineering and technical books, not clearly as an individual person. In older catalog and digitized-book records, it appears in the place where an author or issuing body is listed for practical manuals and instructional works.
Because the attribution is corporate, biographical details are limited. What can be said with confidence is that the name is associated with early technical publishing in Chicago and with books designed to teach applied engineering subjects in a straightforward, workmanlike way.
No verified personal portrait could be confirmed for this entry, which is consistent with a bureau or institutional author rather than a single human author.