Chicago’s invaluable Numero Group label has always complemented its superb collections with beautiful packaging—thorough, fascinating liner notes, rare archival photographs, lovely slipcases. In fact, over the imprint’s history it seems as though the physical presentation of each release has become more important and more elaborate, which makes sense considering how easy it is for most folks to simply illegally download something for free. For the label’s next knockout release, Light: On the Southside, the music is actually a complement to the art: a stunning 12-by-12, 132-page hardbound book featuring gorgeous black-and-white photographs shot by Michael L. Abramson at a handful of south-side blues clubs and lounges between 1975 and 1977.