Project Gutenberg Titles by McGuffey, William Holmes, 1800-1873
The Gutenberg library of the Eclectic Primers Including readers, primers, and spelling-book. These often come with enthusiastic recommendations. I am a bit cautious. I wonder if they are lauded because they are good or because they are old. Older ways are not necessarily better ways. (Nor should one jump to the conclusion that they are necessarily worse ways either.)