Edward W. Bok：The Americanization of Edward Bok, Additional Excerpt 215

Running the elevator in the building where a prominent publishing firm had its office was a negro of more than ordinary intelligence. The firm had just published a subscription book on mechanical engineering, a chapter of which was devoted to the construction and operation of passenger elevators. One of the agents selling the book thought he might find a customer in Washington.

Source： https://www.gutenberg.org/ebooks/3538
Locator：Additional excerpt 215 · Verified：2026-10-19 · Verification：Short excerpt

公版传记；原文逐字取自 Project Gutenberg，仅摘录段落并附全书链接。

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