Comment by BenLPMarts:
It's nice that Billboard showcase piece for the release of Hard Labor [BB 3.9.72 pg 36] showing the release date as 3.37.72 but seems like street date likely was 7.18.72 as this LP is reviewed in 7.22.72 issues of BB [pg 82] & CB [pg 23] & charted BB 7.29.72 & CB 8.5.72.