Norman Rockwell, "Save Freedom Speech" (created between 1941 and 1945)

The Psychologist's Guide to Advocacy

How to Have a Productive Phone Call with Your Legislator's Office, Union of Concerned Scientists 

How to Effectively Engage Your Elected Officials, ReThink (February 15, 2017) 

How To Be a Political Influence—As An Average Citizen, College of the Environment, University of Washington 

Writing Congress FAQs, American Physical Society

How to Write a Letter or Email to Congress, American Psychological Association

Tips for Writing Effective Letters to Congress, ThoughtCo. (February 13, 2018)

South African Goods Boycott Sign, 1986

Boycotts and Buycotts