http://book.klll.cc/ebooks/author/51209.opds 2025-11-17T15:57:57Z Books by Northwestern Bell Telephone Company Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-17T15:57:57Z https://en.wikipedia.org/wiki/Northwestern_Bell See also: en.wikipedia 2025-11-17T15:57:57Z https://book.klll.cc/ebooks/61030.opds Technical School, Sioux Falls Army Air Field Northwestern Bell Telephone Company