http://book.klll.cc/ebooks/subject/9585.opds 2025-08-30T18:57:29Z Books about Copper industry and trade -- United States -- History (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-30T18:57:29Z https://book.klll.cc/ebooks/24423.opds Fifty years with the Revere Copper Co. S. T. Snow