This Tuesday, October 12, marks the 40th anniversary of Cabot Market Letter, our flagship publication. Today, we work in a beautiful, old library in Salem, Massachusetts, but Cabot had humble beginnings at a farm down the road that gave the company its name. Carlton Lutts, a trained engineer with a love for investing, started writing Cabot Market Letter in 1970. At first, the venture was part-time, but eventually, the newsletter brought in enough money that Carlton could work on it full time and Cabot was born. The stocks Carlton recommended in that first issue were Crown Cork & Seal,...