# Astronomical observatories

Free to read here, from Project Gutenberg.

3 titles; page 1 of 1.

- [Two on a Tower](https://invisiblenetwork.ai/books/gutenberg/3146) by Thomas Hardy
- [The prince of space](https://invisiblenetwork.ai/books/gutenberg/73750) by Jack Williamson
- [Black-out](https://invisiblenetwork.ai/books/gutenberg/62426) by Joseph Farrell