Display MoreSome of his thirties films are simply not available on DVD legally at this moment, but it would help us if you would tell what ones you are looking for.
His 6 Universal pictures have never been available on DVD, at least in region one. As for his Republic output for that decade, you are just going to have to wait like the rest of us for Olive films to release them.
As for his 16 Lone Star/Monogram westerns, no one has of yet even bothered to do a proper restoration. So you best bet are those cheap multipacks that can be found everywhere.
Warners however have done a decent job in releasing the 6 B westerns he did for them in 32-33, You can either buy two triple features or all 6 individually.
His one feature with Buck Jones, I was lucky enough to get on an El Cheapo triple feature disc that I think has gone out of print.
Sony on the other hand has released the one John Wayne film they had in their library on DVD years ago.
What it boils down to is that the Duke's 30's films are woefully represented on DVD, and despite the immense popularity the studios are not willing to take risks on restoration on films that are 80 years old at this point.
The quality of that Buck Jones title you mentioned (Range Feud), on those el-cheapo compilations, is pretty bad from what I've seen. The labels have simply copied the official Columbia VHS and degraded the quality even more.
VCI Entertainment has a nice version available on DVD-R, culled directly from a 16mm Gail Pictures television print.
The other two Columbia westerns (Texas Cyclone and Two Fisted Law) were released on DVD by Sony, the latter in a compilation.
VCI's Range Feud can be purchased here:
http://store.vcientertainment.com/product/range_feud/739