During the New Frontier-Great Society era, environmentalists achieved several important legislative milestones, including the Clean Air Act (1963), Wilderness Act (1964), Clean Water Act (1965), and Endangered Species Act (1966). These laws marked significant progress in environmental protection and reflected growing public and political concern for conservation issues.

"In 1967 movement leaders coalesced to form the Environmental Defense Fund, a key lobby thereafter." This organization played a crucial role in advocating for environmental reforms and influencing policy decisions moving forward. Overall, these efforts laid the groundwork for more extensive environmental activism and legislation in the subsequent years.