http://book.klll.cc/ebooks/author/47428.opds 2025-08-13T17:34:36Z Books by Draper, Henry (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 2025-08-13T17:34:36Z https://en.wikipedia.org/wiki/Henry_Draper See also: en.wikipedia 2025-08-13T17:34:36Z https://book.klll.cc/ebooks/53542.opds On the Construction of a Silvered Glass Telescope Henry Draper