I think "cheap knockoff" is a bit harsh as applied to this set. This material was remastered by John R. T. Davies in the 1980's, before the RCA box, and was originally sold as full price individual CD's. JSP began their box program by repackaging their original discs in low priced boxes. Admittedly they have seriously lowered their standards in recent years to compete with Proper, and their shameless Carter Family, Bob Wills, and Jimmie Rodgers sets, lifted wholesale from Bear Famiuly, have rightfully gotten them into trouble, but to my ears this set, booklet or no, is the best way to have this music.
JSP entered the CD era as a quality reissue label, but they have since deteriorated into another inconsistent Proper clone.