Abstract: Records, 1979-2004, of Nukewatch, a national antinuclear group formed in Madison, Wisconsin, and later based in Luck, Wisconsin. Nukewatch began in 1979 as an educational project of the Progressive Foundation, which in turn grew out of fundraising by The Progressive magazine to meet the costs associated with its attempted publication of an article containing alleged atomic bomb secrets. After the legal case was dropped, the foundation transformed its mission to antinuclear education and action. The records primarily concern “Truck Watch,” a project begun in 1984 that monitored the shipment of nuclear missiles by truck from assembly plants to military installations around the country, and non-violent direct actions directed against Project ELF, a controversial Navy communications system located in Northern Wisconsin and Upper Michigan.