Doug Harland is an avid collector and restorer of old Zenith televisions. He finds them, fixes them, keeps them alive. (.) He’s one of those people that develop a passion for saving a particular piece of history, an increasingly important thing to do in our throwaway culture. I know there are other avid collectors of televisions, radios, and all sorts of technology out there, but Doug is the one I found. Should/when I write a book about the history of the button, it’s these caretakers of history that are going to save my bacon. They’re saving the knowledge that could easily be lost forever. Thank you.. Here is a 1964 Zenith model 6075U, with a the 25LC20Q chassis. In the rare, limited production chinese provincial cabinet. This set has space command 400 remote control.. Zenith Space-Command 400 Series Manuals & User Guides. User Manuals, Guides and Specifications for your Zenith Space-Command 400 Series Remote Control..