Large-scale environmental communication programs targeting unique populations can provide models for additional scholarship in this area. This case study discusses two environmental communication programs spanning a total of over 20 years. The case study examines the approaches used in these programs for partnering with unique population groups, the methods of research, and key findings that can inform the design and implementation of future environmental communication programs. It analyzes each approach across a range of criteria that are useful to consider in the development, implementation, and evaluation of programs. Lessons learned are discussed for the design of future environmental, programs.