How does one adequately thank a person who provided exactly the right help and encouragement at exactly the right time in a young man's life resulting in a family supporting career and income? Even two wives (nobody's perfect) and daughter owe you a thank you.
While I have fond memories of a few key teachers in some classroom settings, I can firmly point to that Radio Shack purchase of my copy of your "Engineer's Notebook" in 1977 as the real start of my career in Electronics-to-Computers-to-SoftwareEngineering.
I suppose the obvious answer is "Pay it Forward". While I have recommended your books to techno-curious young people I have met over the years, what else can and should be done?