![The Project Gutenberg eBook of Bulletin 240 - Contributions from the Museum of History and Technology, by Smithsonian Institution. The Project Gutenberg eBook of Bulletin 240 - Contributions from the Museum of History and Technology, by Smithsonian Institution.](https://www.gutenberg.org/files/40782/40782-h/images/i0103413.jpg)
The Project Gutenberg eBook of Bulletin 240 - Contributions from the Museum of History and Technology, by Smithsonian Institution.
![The Project Gutenberg eBook of Bulletin 240 - Contributions from the Museum of History and Technology, by Smithsonian Institution. The Project Gutenberg eBook of Bulletin 240 - Contributions from the Museum of History and Technology, by Smithsonian Institution.](https://www.gutenberg.org/files/40782/40782-h/images/cover.jpg)
The Project Gutenberg eBook of Bulletin 240 - Contributions from the Museum of History and Technology, by Smithsonian Institution.
![The Project Gutenberg eBook of Bulletin 240 - Contributions from the Museum of History and Technology, by Smithsonian Institution. The Project Gutenberg eBook of Bulletin 240 - Contributions from the Museum of History and Technology, by Smithsonian Institution.](https://www.gutenberg.org/files/40782/40782-h/images/i0043402.jpg)