All available episodes of the 3 seasons have been restored now. They are airing on the RFD network in US. It's also possible to buy streaming in any country.
So far I only see Vol.1 of Season 1 offered for sale, at https://www.thejimmydeanshow.com/purchase. But someone has been able to purchase Vol.2 by phoning, so you might be able to get more.
Vol.2 contains the Teresa Brewer episode. It has some audio damage so was not included in RFD airings.
Since Season 1 was remastered there has been more than one DVD compilation issued. It needs sorting out. There was a project of The Legends Group of Florida, but they were extremely negligent in the marketing phase. That release seems to have fallen by the wayside and is not on sale.
ReviewThis includes 15 complete episodes from the entire first season of 31 episodes. For example Eddy Arnold, Johnny Cash, Eydie Gormé, Jane Morgan. Many episodes are not covered, including guests Teresa Brewer, The McGuire Sisters, Maureen O'Hara.
This is a project of Donna Dean Stevens, his former wife, and is available now.
A full-scale restoration was done on the original films, which is documented at YouTube. It is taken from kinescopes, which were movie film of a studio TV monitor. TV screens being curved, there are imperfections in the shaping of some faces. These kinescopes were made from 2-inch videotape. Otherwise the picture quality looks very good.