I've been trying to collect info from the years before Fender bought Sunn. My intent is to document what years various models were offered. Still looking for info from the following years: 71, 73, 76, 77, 78, 80, 81 and 83. In some of these years there was a separate Sound Reinforcement catalog and that info is usefull too. There are probably also some Lighting catalogs, although there is not very much interest in those products here. So if you have a catalog from one of the missing years, send me a PM so we can fill in the missing years.