This document summarizes James Gallagher's contributions to curriculum and instruction for gifted students over four eras from 1964 to the 1990s. It provides an overview of Gallagher's early work defining characteristics of gifted students and approaches to teaching them arithmetic, science, and social studies. It describes Gallagher's later emphasis on collaboration and the content specialist model for curriculum development. The last section discusses Gallagher's view that curriculum should be driven by the needs and potential of individual students.