- Listenly
- Public Library
- Project Gutenberg
- Daniel W. Baker
- History of the Harvard College Observatory During the Period 1840-1890
History of the Harvard College Observatory During the Period 1840-1890
Language
en
Duration
~2 hours (118K characters)
Publisher of text edition
Project Gutenberg
Credits
Produced by ellinora, Robert Tonsing and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/American Libraries.)