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Volumes

1. Vol 1 Learning by Building, 1947–1974
2. Vol 2 Heathkit Continuing Education, 1975–1979
3. Vol 3 Heathkit/Zenith Educational Systems, 1979–1992
4. Vol 4 Heathkit Educational Systems, 1992–2012
5. Vol 5 The Trainers and Courses Today
6. Vol 6 Reference — Models, Courses and Sources