| Author: | Collins, A. Frederick (Archie Frederick), 1869-1952 |
| Subject: | T, Inventions |
| Format: | Text |
| Date issued: | 2015 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Inventing for Boys [electronic resource] / A. Frederick Collins |