Le Roy C. Cooley

1833 – 1916

• A guide to elementary chemistry for beginners
• A text-book of chemistry
• Easy experiments in physical science
• Easy experiments in physical science
• Easy experiments in physical science
• Laboratory studies in elementary chemistry
• Natural philosophy
• Natural philosophy for common and high schools
• Physics
• The new text-book of chemistry
• The new text-book of chemistry
• The new text-book of physics