Horatio Nelson Robinson

• Elements of Plane and Spherical Trigonometry - with Numerous Practical Problems
• Key to Robinson's New Elementary Algebra
• Key to Robinson's New University Algebra
• Key to the Progressive Higher Arithmetic - for Teachers and Private Learners
• Key to the Progressive Practical Arithmetic, Including Analysis of the Miscellaneous Examples in the Progressive Intellectual Arithmetic
• New Elementary Algebra : Containing the Rudiments of the Science
• Robinson's New Intellectual Arithmetic
• Robinson's New Practical Arithmetic for Common Schools and Academies
• Robinson's New Primary Arithmetic