Mailing Lists

For some years now, I have been recreationally tracing the path of various mailing lists - you know, trying to figure out which company has sold my contact information to some new catalog that arrives unbidden. I have a friend who used to sign up for each new thing using a different middle initial so he could figure it out more easily. I'm not that organized, but I do use a different form of my name and will include a company name or title if I'm subscribing to something work related...which is why I'm very curious about the path of a brochure that just arrived, addressed to my home name at my home address, no company name or title: Columbian TecTank, for fire protection water storage tanks. The kind I can rely on to safeguard my liquid petrochemicals and wastewater. It gets more confusing when you consider the fact that my work junk mail trail tends to be electrical device related. Wire, backboxes, watertight connectors, conduit bending tools...but all that stuff comes to my work name, with my company or title attached. Has L.L.Bean's or Pottery Barn joined up with an industrial liquid enclosures gang?