A number of very early Columbia lps were issued with a generic cover picturing a column. These came in a variety of paper or cardboard types. In the previous post I showed ML 4004 in a generic cardboard cover that opens on the right like most normal covers since. It is nevertheless not a standard lp cover – note how the cardboard is folded over on the back, like cheap covers on the Halo label and unlike the version of ML 4004 with the prism cover.
Here are ML 4002 and ML 4039 in two different formats. Both openn at the top, both are paper. 4002 has a flap that folds over and 4039 just opens to the top. Very cheap stuff, unlike anything a major label would do again after 1948.